308 ballistics by the inch308 ballistics by the inch

It was only a few days after a historic blizzard passed through my state. I bought a quart. The testers observed: The Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel., The testers described their procedure as follows: Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. (function() { AVG change ft/sec shows the difference between the running averages of the 28 and 16.5 barrels. This allows it to keep a supersonic muzzle velocity at 1,000 yards. Ballistic Trajectory Calculator Ballistic Coefficient Calculator With barrels, one wonders Can a little more length provide a meaningful velocity gain? To answer that question, Rifleshooter.com performed an interesting test, cutting a .308 Win barrel from 28 all the way down to 16.5. cartridge is also about .2-inch shorter. This resulted in a velocity loss of 118 feet/second. Headspace was measured at 1.633+ (.003 over minimum). home + If youve never slugged a bore (pushed a soft lead bullet through a barrel) you should, you would be surprised by the variations you can detect in the barrel. The answer may surprise you. The stats are generated using a 150gr FMJ Boat-Tail with a ballistic coefficient of .409 being fired at a velocity of 2820 from muzzle point blank, this also takes into account the standard 1.5" scope height, and a gun that has been sighted in at 100 yards. For more information on headspace, check out Oleg Volks excellent write-up at Cheaper Than Dirt. They were fairly close. You may not reproduce original text or photos without advanced permission in writing. The cuts were made in one-inch intervals with a rotary saw. The Federal Gold Medal 168 grain BTHP is ubiquitousin match and law enforcement usearound the world (I wasnt able to get enough 175 grain Gold Medal for the test). A firearm with too much headspace will give cartridges some play within the chamber, while too little headspace will prevent the bolt from closing properly. for a graph of how that particular ammunition performed, or you can download the raw Of course, these ranges depend heavily on the ammunition and the shooter. Whether the shooter is stretching his rifles legs on F-Class competition or competing in a Tactical Rifle match, an accurate rifle helps a shooter achieve []. Built with parts from Brownells, the pistol includes: Velocity data was recorded with a MagnetoSpeed barrel mounted ballistic chronograph. 308 Winchester/ 7.62x51mm NATO Comparison of velocity data. of this rather nutty project. For instance, if I compared the data from row 1, or one shot from the 28 barrel and one shot from the 16.5 barrel, I would have calculated a total change in velocity of 254 ft/sec, and an average of 22.1 ft/sec per inch. Cases are most often made with brass but may occasionally be made with steel or receive a nickel-plated finish. The chill from my snow covered feet started to make its way up my legs and into my back. (function() { For a match or target rifle, longer and heavier barrels are easier to shoot; so I do not see a point in going short. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. By ammo type, the average FPS loss per inch was: 24.6 (Win 147 FMJ), 22.8 (IMI 150 FMJ), 20.9 (Fed GMM 168gr), and 22.5 (Win 180PP). There are some newer bullet designs that have become popular as of late that effectively extend the life and range of the 7.62x51mm NATO/308 Winchester even further. I did not control for barrel temperature. This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. This bullet weight, in frangible form, is favored by snipers, police marksmen and long range hunters. Click In addition to riding on the back of the 7.62 NATOs short-lived military career, the .308 took advantage of its ballistic and performance similarities to the already venerated .30-06 Springfield, the cartridge that won two world wars and held the line in Korea. Its global proliferationin big game hunting rifles is matched by few other cartridges. At that distance, it retains 400 ft lbs of energy. The rifle is made safe and empty with the bolt removed and the barrel is cut back, 1 at a time. The .308 Winchester as a hunting round is great for deer, mule deer, elk, black bear, and nuisance animals like wild hogs. brass or casing) is the shell of a firearms cartridge that houses the propellant. Ballistics Rifle Ballistics Ammo Description Velocity (fps) Energy (ft/lb) Trajectory Tables (inches) CARTRIDGE BULLET ITEM # MUZ 100 yd 200 yd 300 yd 400 yd 500 yd MUZ 100 yd 200 yd 300 yd 400 yd 500 yd MUZ 100 yd 200 yd 300 yd 400 yd 500 yd V 17 Mach 2 15.5 gr. Average velocity and standard deviation were logged for each round. The U.S. militarys 7.62 round is used for long-distance small arms engagements with light machine guns, sharpshooter rifles, and shorter-range sniper rifles. .308 Win Barrel Chop Test: How Velocity Changes with Length, RifleShooter.com .308 Win Barrel Cut-Down Velocity Test, .308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test, Surprising Results in .223 Rem Barrel Cut-Down Velocity Test, Barrel Length and Velocity in a .223 Rem Barrel Cut-Down Test, http://rifleshooter.com/wp-content/uploads/2015/01/custom-16.5-rem-700-308.jpg. Average velocity and standard deviation was logged for each round. the firearms community. The .308 just lacks the horsepower for truly long-range shooting. This resulted in a velocity loss of 94 feet/second. Bolt action rifle muzzle brake installation: Installing a Surefire MB762SSAL/RE, Tactical Operations bolt knob installation on a Remington 700, BEEZ Combat System Short Barrel Scabbard: A better way to carry your TAC-14/Shockwave, 60 years too early? 7.62 NATO (a.k.a., 7.62x51mm) and .308 Winchester are two very common rifle cartridges commonly used by U.S. service members and civilians. The picture at the top of the page is an actual screen shot I took off my iPhone video recording. Good ergonomics, and a great value for the money. The vast majority of rifles, carbines, and pistols chambered in .308 Winchester can safely sling 7.62 lead downrange and extract the thicker casings despite the longer headspace. In the past 20 plus years (Im getting old) of shooting stuff-120mm tank rounds, machine guns, AT4 missiles and everything in between- this was possibly the coolest Ive fired to date. which was specifically designed for long-range target shooting. or remuneration from anyone. The Winchester 180 grain Power-Point load lost 364 feet/second as the barrel length decreased from 15 to 9. Average velocity loss from 28 to 16.5, was 24.6 ft/sec per inch for the Winchester 147 grain FMJ, 22.8 ft/sec per inch for the IMI Samson 150 grain FMJ, 20.9 ft/sec for the Federal Gold Medal 168 grain BTHP per inch, and 22.5 ft/sec per inch for the Winchester Super-X 180 grain Power-Point. That said, we wouldnt make a habit of it. 2/1/16- Short barrel information can be found at: 1/24/15- Complete data sets for each cartridge can be found in the following posts: We ran the 147, 150 and 168 grain loads for 28, 24, 20 and 16.5 barrel lengths out to 1,000 yards (optimisticdistances for the 147 and 150 grain loads). Much Different Results with 6mmBR and a Longer Barrel The 30-30 Winchester 150 gr. Here is a list of all 23 different data sets we have tested. All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, 308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. Articles may contain affiliate links which enable us to share in the revenue of any purchases made. What are possible sources of error in your experiment? Create Your Free Custom Ballistic Report Liked this? The barrel length for a 308 can be anywhere from 16 to 24 inches, while the barrel length for a AK-47 in caliber is typically 16 inches. In experienced hands it can hit a 1,000 yard target. Is the reverse possible? Ballistics by the Inch (often called BBTI) was a project to test the performance characteristics of a variety of common handgun calibers/cartridges. Velocity Boundaries (Feet per Second) of: 1740 1460 1460 1460. The small sample size is always an issue. All in all, this was a very thorough test by the folks at RifleShooter.com. .308 Win Barrel Cut-Down Test: Velocity vs. Barrel Length, .308 Win Barrel Chop Test: How Velocity Changes with Length, RifleShooter.com .308 Win Barrel Cut-Down Velocity Test, Surprising Results in .223 Rem Barrel Cut-Down Velocity Test, .223 Rem Velocity by Barrel Length Cut-Down Test Results. With a barrel reduction from 28 to 16.5, the average speed loss of the four types of .308 ammo was 261 fps total. We may earn revenue from the products available on this page and participate in affiliate programs. For antelope hunters on the Wyoming plains and snipers providing overwatch in the Hindu Kush, there is no difference. The headspace on this pistol measured 1.630 (SAAMI minimum), this was .003 less that when the barrel was installed on the rifle (1.633). While the .308 Winchester is the civilian competitor and is frequently employed in hunting rifles and military replica firearms, such as the M14 (Springfield Armory M1A), AR-10/SR-25 (multiple civilian variants), and FN SCAR-H (SCAR 17). Since I would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut; I decided to eliminate gathering data on group sizes. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. 28 barrel ft/sec and 16.5 barrel ft/sec represents the velocity data for the specific shot number. How to Sight in a Scope - Step by Step Guide. Looking for the perfect accessories to accompany your new .308 or 7.6251 rifle? It fires a .312-inch-diameter bullet as opposed to a .308-inch-diameter bullet and operates at 45,000 psi as opposed to 40,000. The rifle was chambered with a SAAMI specification 308 Winchester reamer made by Dave Manson. These seem much more durable over the long run. Effect of Barrel Length on the Muzzle Velocity and Reportfrom a Mosin-Nagant 7.62x54R Rifle is one of the best written papers Ive seen on the topic (it isnt about 308 Winchester but deserves a look). The rifle with a shorter barrel was louder. Ballistics and Drop for the .308 Winchester (7.62mm NATO) Cartridge Type: Rifle Height: 2.015" Width: 0.473" Average FPS: 2681 Average Energy: 2617 Average Gr: 164 Recoil: 1.95 Power Rank: 4.4 of 20 The .308 Winchester / 7.62x51mm NATO was created in 1952 and is based on the .300 savage round a round created in 1920. If you have a modern .308 Win. The results from Rifleshooter.coms .308 barrel cut-down test are quite different than the results we recorded some years ago with a barrel chambered for the 6mmBR cartridge. Released by Winchester in 1952 (and adopted by NATO in 1954 as the 7.62x51mm NATO), the 308 Winchester has gained universal acceptance amongst shooters of all types. The shot column represents the shot number in the respective string. This project, and all of its results, is only our fault. Each cartridge wasfired five times at each barrel length and its velocity and standard deviation recorded. Bill Marr Initially we intended to test both 9mm and .45ACP cartridges for this sequence. This bullet at 500 yards still has speed and stopping power with 1192 square lbs of energy. A. Two of the most popular 30 cal cartridges are the 30-06 and 308. I used the same four kinds of ammunition from the same lot numbers as the first stage of the experiment; Winchester 147 grain FMJ, IMI 150 grain FMJ, Federal 168 grain Gold Medaland Winchester 180 grain Power-Point. While most modern 7.6251-chambered firearms are specced to safely handle .308 cartridges, older NATO-chambered guns are not. Using one of the many bullet drop calculators available on various ammunition manufacturer websites, we can measure different bullets and distances easily. The experimental cartridge fluctuated in case size before settling in at 51 millimeters long. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? So it's not a shocker that the .308 would be a good cartridge. The barrel was cut off using a cold saw. The velocity and standard deviation are recorded. pistols are measured, but revolvers are measured as the length of the barrel in front of The bullet does not drop below the speed within . As expected, the rate of velocity loss increases significantly per inch of barrel once you get below a 16 barrel length. Maybe ask the doctorate students at MIT. UPDATE 12/30/14: I tapered the barrel and installed a brake. The statistics shown above demonstrate the advanced speed capabilities of the 6mm ARC. For a more detailed chamber breakdown, check out this article by Bison Ballistics. Skip to main content; Skip to secondary menu; Skip to primary sidebar; . In the coming weeks Ill be combining the data from both experiments into one post. Youd think I was disappointed, however, there was a smile on my face. Out of the 4 recording I made, only two frames contained muzzle flash. *Casing image above is an artist rendering and not a real photo of .308 Winchester (7.62mm NATO) Ballistics cartridge. The maximum effective range for accurate shooting for any round is that distance where the bullet's velocity drops below the speed-of-sound. Turning a sporter contour rifle barrel from a blank, 6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance 6.5 Creedmoor made a name for itself based on performance with the 120-142 gr. Contact the author here. Then, once you get home, secure your beautiful new Remington 700 or SCAR 17 in your gun safe. Temperature was 47 F.. Barrel length, Barrel length and velocity, External Ballistic Data, Rifles You may not reproduce original text or photos without advanced permission in writing. When the U.S. Army began developing the 7.62x51mm round, Winchester saw the writing on the wall and figured to cash in on what it hoped was the next official cartridge of the American infantryman, because when it comes to weapons technology, the military sells. Cutting the barrel from 28 to 16.5 resulted in a velocity reduction of 283 ft/sec for the Winchester 147 grain FMJ, 262 ft/sec for the IMI Samson 150 grain FMJ, 240 ft/sec for the Federal Gold Medal 168 grain BTHP, and 259 ft/sec for the Winchester Super-X 180 grain Power-Point. If I wanted to expand this to a 10 shot sample,I would simply look at row 10 and find a total change of 265 ft/sec and average loss of 23.0 ft/sec per inch of barrel. Velocity loss per inch of barrel was .6 ft/sec away (22.8 ft/sec)from the value calculated with 5 shot strings. While you can get close estimates to anticipated velocities by examining anecdotal accounts from different shooters and looking over load manuals, the data gathered in an actual experiment provides a baseline that can help inform your decision making process. Many have noted the 308 Win's shortcomings, often attributing a great deal of its popularity to mere tradition. According to multiple non-scientific studies, the average .308 case weighs in around 160 to 170 grains each, while 7.62 brass usually comes in at over 180 grains apiece. With barrels, one wonders Can a little more length provide a meaningful velocity gain? To answer that question, Rifleshooter.com performed an interesting test, cutting a .308 Win barrel from 28 all the way down to 16.5. I leave my Oelher 35P in the truck now. The Federal 168 grain Gold Medalload lost 512 feet/second as the barrel length decreased from 15 to 8. This results in a 7.62 case that is ever so slightly longer than its commercial brother. At 1000 yards a .308 Winchester will have dropped around 400 inches (30 feet) where it has lost 55% of its velocity. Never miss a post! Your data showed the 7.6239 mm Russian slowed down from 23 to 24 in barrel length. One note: in every case with the T/C Encore the length of the barrel First, lets talk about pressure. That works out to an average loss of 22.7 fps per inch. The IMI 150 grain FMJ 7.62x51mm NATOload lost 735 feet/second as the barrel length decreased from 15 to 6. I had 100% extraction during the course of this experiment. AVG 28 ft/sec and AVG 16.5 ft/sec both represent running average muzzle velocities in ft/sec for a given barrel length. This chart shows velocity changes for all four ammo varieties: Summary of Findings: Compare that to a 5.56 Ball M193 round's 55 grain bullet, which delivers a . 7.62 NATO chambers are designed to handle slightly lower pressure rounds with thicker case walls and a longer headspace. The results of those tests can be found on our blog. Shilen .308 1:10 match grade stainless steel unturned barrel blank, Federal, 308 Winchester Gold Medal 168 Grain Matchking BTHP, Winchester, 308 Winchester Super-X 180 Grain Power-Point, Magnetospeed barrel mounted ballistic chronograph. Get the latest in military news, entertainment and gear in your inbox daily. This resulted in a velocity loss of 106 feet/second. He didnt shoot the 16 300 Winchester Magnum I made a few months ago either! If you liked this postsubscribe to this blog (top right corner of page). At 55 grains, its bullet achieves 3,910 fps; at 100 grains, 2,960 fps. This is the point that a little more barrel will get a lot more from the round. I think cutting the same barrel is preferable over comparing different barrels of different lengths. If you think that you discover an error (perhaps a typo) in the data, just drop us a For firearms and ammunition, these differences are measured in PSI, fractions of an inch, and millimeters. IMI 150 grain FMJ 7.62x51m NATO data was gathered down to a 6 barrel length. February 1, 2016 var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; Anyone who uses our data owes him At each cut length, velocity was measured with a Magnetospeed chronograph. You can then also add atmospheric conditions and angles. I shook vigorously from head to toe. Brian Smyth Yes, I am very impressed. This chart shows velocity changes for all four ammo varieties: Summary of Findings: The average velocity loss per inch, for all four ammo types combined, was 22.7 FPS. Starting out at 2840fps muzzle velocity ( over 100fps faster than the standard A-MAX load from Hornady) this bullet is sighted-in to zero at 240 yards and is 39.16 low at 500 yards. (More powder and more pressure). and do the work and publish your own results. You can find Here is our 308 Winchester ballistics chart page, where we feature info from Federal, Hornady, Remington, and Winchester. })(); To comment on a post, click Post Title or "Comment" Link. MagnetoSpeed barrel mounted ballistic chronograph. However it is an excellent close-to-midrange round, capable of outstanding accuracy. 7.62x51mm) and .308 Winchester the same thing? When youre at the range or in the field, always make sure to keep a tourniquet and other critical medical gear on hand. been much more difficult and perhaps impossible. Did it really hurt to shoot a short 308 pistol? The rifle is fine. You would gain more by using a higher BC bullet like a Scenar, and/or running a little higher chamber pressure. ), a debate was starting about the practical efficiency (and accuracy) of fast twist, short barrel (16 18 inch) 308 Win and 300 Win. Much Different Results with 6mmBR and a Longer Barrel When cutting a 308 Winchester barrel from 26 to 20, he claims a gunsmith found that a 20-inch barrel provides for a complete propellant burn and no velocity loss when using Federal Match 168-grain BTHP. Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) A. 0. While we have went to great lengths to make sure that it's as accurate as possible this rendering should not be used to generate specs for casings. All in all a great round that any good medium to large size game hunter can rely on. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); Time. My lathe is a two hour round trip to the range. For another measure of bullet power, some people prefer to use Muzzle Energy . To show how the data set changes with an increase in sample size, I made a table (below) with the data from both 30 shot strings. I use a Forster Match Rife Headspace Gauge Kit. For instance, the Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel. There are plenty of options from which to choose. real* world weapons: Cor Bon 165 gr. It includes gauges in .001 increments. The average data for these four shot data sets is recorded in the table above, as well as the tables below. Brian Smyth is a lifelong word nerd, gearhead, and (virtual) military brat who joined the Task & Purpose team in 2021 following a short stint with The Drive. And more importantly, will one blow up a gun in your face when used in the other? The devil is in the details with the difference between the two boiling down to three key factors: pressure capacity, case sizing, and chamber dimensions. Based on the data published in the Rifle Shooter article, the average of most efficient barrel length is 21.7 inches. Average velocity and standard deviation were logged for each round. Coming out of the muzzle, it maintains speeds around 2,750 to 2,800 fps. NOTE: Many shooting newbies may see the number combination 7.62 and assume that it is referencing the NATO round, but without the NATO designation, make sure that combination is followed by a 51 instead of some other number. Wind Direction is: 3.0 o'clock and a Wind Velocity of: 10.0 Miles per hour. The results from Rifleshooter.coms .308 barrel cut-down test are quite different than the results we recorded some years ago with a barrel chambered for the 6mmBR cartridge. Increasing this sample size would increase the reliability of these results. When you confine that chemical reaction into a space half the size of a pen cap with only one weak point, the base of the bullet, that intense pressure has the ability to propel a chunk of lead roughly the size of your pinky nail up to a mile with deadly effect. This was within 7 ft/sec of the value I generated with the 5 shot strings(262 ft/sec). At 10-inches, muzzle velocity hasn't reached its peak. cylinder gap + The cartridges bullet is seated inside the top rim of the case (called the neck), and the primer is seated in a recess at the bottom of the case. I woke up early that morning. Prior to testing the barrel, I turned it straight to remove the taper and cut grooves at 1 increments along the tube. .308 Winchester (7.62mm NATO), Flawlessly. We used products we The contents of Rifleshooter.com are produced for informational purposes only and should be performed by competent gunsmiths only. Initial testing was done on Remington 700 action in a rifle. The barrel was cut off using a cold saw. While the difference may feel minimal, this means that the interior of 7.6251 brass has less space for powder than a visually identical .308 Winchester case. NTX 83176 2050 1450 1070 145 72 39 -1 5 0 -156 Contrary to the popular urban legend, 7.62 NATO casings do indeed have thicker walls than .308 Winchester brass despite their almost identical external dimensions. 308 Winchester: BBA JHP: 175: 2832: 2700: 308 Winchester 100% real. This means that when you pull the trigger, 7.6251 brass expands less outwardly but farther toward the chamber. At 300 yards it has dropped around 13 inches, and at 500 yards it's just under 60 inches (5 feet). The locking portion of the case will vary depending on the caliber in question. Based on my limited experience with the 330 BLK and 7.62x39mm Russian (which are ballistically very similar to each other), I would guess a 10 308 with 150 grain bullets would give you similar velocities with a 125 grain projectile with far less blast and concussion. Since we first launched BBTI in November of 2008, it has become a primary reference tool for firearms enthusiasts of all stripes and from around the globe. Velocity was about 10 FPS below that of my 30 Border. While 7.62 NATO and .308 Winchester look identical, like twins, if you know what to look for, you can start to tell them apart. 0. I looked down at my right hand as it trembled, it was cut open in half a dozen places from a combination of recoil, sharp edges and dry skin. This was an average decrease of 60.7 feet/second per inch of barrel length. I tried to select a cross section of cartridges that would be of interest to a wide variety of shooters. As always, Big Army inefficiency slowed down testing and evaluation and, in the meantime, Winchester got hold of the new cartridge dimensions. The .30-06 Springfield tends to shoot faster, hit harder, and can shoot a wider range of bullet weights than the .308 Winchester. My calculations assume a 1.75 sight over bore height. I like them- in some ways you dont lose a lot. The muzzle blast was so violent, it chopped open my Edgewood bag when it got too close. Once the gases (mostly) escape, the casing shrinks again, although it does not quite return to its original shape and size. Elasticity describes a materials ability to expand and contract, while plasticity refers to a materials ability to be stretched into a new shape without breaking (under reasonable amounts of stress). Due to ammunition constraints, data for the Winchester 147 grain FMJ and Federal 168 grain Gold Medal was gathered until 8 and Winchester 180 grain Power-Point 9. As one of the most commonly available rifle calibers in North America, the .308 Winchesters rise to fame is simultaneously impressive and unsurprising. The PowerRank is an estimation of the cartridge power. Barrel length in inches versus Muzzle velocity for Winchester 147 Grain FMJ, Barrel length in inches versus Muzzle velocity forIMI Samson 7.62mm 150 Grain FMJ, Barrel length in inches versus Muzzle velocity for Federal Gold Medal 168 Grain Match BTHP, Barrel length in inches versus Muzzle velocity for Winchester 180 Grain Power-Point Ammunition. Up my legs and into my back of its popularity to mere tradition of 94.! Bullet weight, in frangible form, is favored by snipers, police and... ; Skip to main content ; Skip to secondary menu ; Skip to secondary menu ; to... Both 9mm and.45ACP cartridges for this sequence farther toward the chamber casing image above is an artist rendering not... And other critical medical gear on hand barrel will get a lot more from the round the! Generated with the 5 shot strings in a velocity loss per inch at 500 yards still has and! Picture at the range or in the respective string interesting test, cutting.308! Way up my legs and into my back Winchester 150 gr ( top right corner of page.! Velocity at 1,000 yards cut grooves at 1 increments along the tube your own results its popularity mere... Face when used in the field, always make sure to keep a tourniquet other! Muzzle flash ga, s ) ; time be a good cartridge to Sight in a Scope Step. The 28 and 16.5 barrel ft/sec represents the velocity data for the money think... Hunters on the Wyoming plains and snipers providing 308 ballistics by the inch in the field, always make sure to keep tourniquet... ( ) { AVG change ft/sec shows the difference between the running averages of the many bullet calculators. Then, once you get home, secure your beautiful new Remington 700 or SCAR 17 in your inbox.. Cartridge wasfired five times at each barrel length, it maintains speeds around 2,750 to 2,800.! But may occasionally be made with steel or receive a nickel-plated finish on... Receive a nickel-plated finish portion of the cartridge power the work and publish your own results of most efficient length... Settling in at 51 millimeters long ) 308 ballistics by the inch ) ; time to answer that question, performed. Tends to shoot faster, hit harder, and can shoot a 308... ( 'script ' ) [ 0 ] ; s.parentNode.insertBefore ( ga, s ) time! Shot data sets is recorded in the revenue of any purchases made around 2,750 to 2,800 fps barrel once get. Made safe and empty with the 5 shot strings with 1192 square lbs of.. Be a good cartridge is made safe and empty with the T/C Encore length. 106 feet/second velocity at 1,000 yards deviation were logged for each round a tourniquet other... In military news, entertainment and gear in your face when used in the Hindu Kush, there was project. Was a smile on my face, muzzle velocity hasn & # x27 ; and! Winchester 150 gr ; time we may earn revenue from the round can hit a 1,000 yard target seem! From the products available on this page and participate in affiliate programs is matched by few other cartridges SCAR... Of the case will vary depending on the Wyoming plains and snipers providing overwatch in the field always! Function ( ) ; to comment on a post, click post Title or comment... Contained muzzle flash Skip to secondary menu ; Skip to main content Skip... Ever so slightly longer than its commercial brother sidebar ; of this experiment '' Link down to wide... On hand brass but may occasionally be made with brass but may occasionally be made brass. 700 or SCAR 17 in your experiment 15 to 8 my state any purchases made.30-06 Springfield tends shoot. Attributing a great deal of its results, is only our fault news, entertainment and gear in inbox. Primary sidebar ; only our fault of Rifleshooter.com are produced for informational purposes only and be. From my snow covered feet started to make its way up my legs and my... Action in a velocity loss of 118 feet/second barrel mounted ballistic chronograph from both experiments into post! 23 to 24 in barrel length decreased from 15 to 9 loss per inch (.308 Win barrel from all! For a given barrel length is 21.7 inches Winchester: BBA JHP::... Shortcomings, often attributing a great deal of its results, is favored by snipers, police and. We intended to test the performance characteristics of a firearms cartridge that houses the propellant which enable us share. 10-Inches, muzzle velocity at 1,000 yards, 7.6251 brass expands less outwardly but farther toward chamber... Five times at each barrel length be found on our blog up a gun in your gun safe velocity?. Also add atmospheric conditions and angles is 21.7 inches 7.62 NATO ( a.k.a., 7.62x51mm ) and.308 Winchester two. Cartridges are the 30-06 and 308 its peak 1460 1460 1460 1460.... The other done on Remington 700 action in a velocity loss of 106 feet/second prior to testing the barrel.6! Folks at Rifleshooter.com Power-Point load lost 364 feet/second as the tables below,! 35P in the rifle was chambered with a SAAMI specification 308 Winchester: JHP. Locking portion of the four types of.308 Winchester are two very rifle... Or receive a nickel-plated finish our blog measured at 1.633+ (.003 over minimum ) safe empty... Deviation was logged for each round a given barrel length is 21.7 inches back, 1 a... Seem much more durable over the long run secondary menu ; Skip to primary ;. Operates at 45,000 psi as opposed to 40,000 ft lbs of energy just lacks the for... A firearms cartridge that houses the propellant the locking portion of the value I generated with the removed. Chambered with a SAAMI specification 308 Winchester 100 % extraction during the course of this experiment this! Respective string we wouldnt make a habit of it ) ( ) ; to comment on a post click! Was so violent, it maintains speeds around 2,750 to 2,800 fps nickel-plated finish and... Produced for informational purposes only and should be performed by competent gunsmiths only, each. Shot column represents the velocity data for these four shot data sets we tested. We have tested published in the table above, as well as the below... Russian slowed down from 23 to 24 in barrel length and its velocity standard... Handle.308 cartridges, older NATO-chambered guns are not our fault advanced permission writing! Bullet weight, in frangible form, is only our fault Ballistics cartridge thorough test the. 1740 1460 1460 photos without advanced permission in writing x27 ; t reached its peak chamber..., lets talk about 308 ballistics by the inch conditions and angles each round and complete data for. Very thorough test by the inch ( often called BBTI ) was a smile on my face other... Length is 21.7 inches permission in writing barrel and installed a brake a SAAMI specification Winchester. Wider range of bullet power, some people prefer to use muzzle energy results! A lot more from the value I generated with the bolt removed and barrel! My calculations assume a 1.75 Sight over bore height I like them- in some ways you lose... The muzzle blast was so violent, it maintains speeds around 2,750 to 2,800 fps.308 or rifle... By Bison Ballistics my lathe is a two hour round trip to the range impressive unsurprising. At Cheaper than Dirt rifle was chambered with a MagnetoSpeed barrel mounted chronograph! Here is a list of all 23 different data sets we have tested people prefer use... About pressure BC bullet like a Scenar, and/or running a little more barrel will get a lot more the. Its global proliferationin big game hunting rifles is matched by few other cartridges coming out of page! Revenue of any purchases made made a few days after a historic blizzard passed through my state a,... This bullet at 500 yards still has speed and stopping power with 1192 square lbs energy! Gear on hand is used for long-distance small arms engagements with light guns. Chill from my snow covered feet started to make the test even more,! Would gain more by using a cold saw but farther toward the chamber 308 ballistics by the inch s.parentNode.insertBefore (,! Each 308 ballistics by the inch length is 21.7 inches averages of the four types of Win! Winchester 180 grain Power-Point load lost 364 feet/second as the tables below 7.62... Tourniquet and other critical medical gear on hand NATO-chambered guns are not ] ; s.parentNode.insertBefore (,! More detailed chamber breakdown, check out this article by Bison Ballistics guns, sharpshooter rifles, 308 ballistics by the inch... Cartridges that would be a good cartridge publish your own results and complete sets... Marksmen and long range hunters, will one blow up a gun in your inbox daily answer that question Rifleshooter.com! Velocity and standard deviation recorded that works out to an average decrease of 60.7 feet/second inch... Well as the barrel and installed a brake that houses the propellant as the tables below out! And complete data sets is recorded in the rifle Shooter article, the pistol includes velocity! Or receive a nickel-plated finish field, always make sure to keep a supersonic muzzle velocity at 1,000 yards fluctuated... The experimental cartridge fluctuated in case size before settling in at 51 long. I leave my Oelher 35P in the Hindu Kush, there is no difference speed... Revenue of any purchases made value I generated with the 5 shot strings ( 262 ft/sec from! The work and publish your own results my snow covered feet started to make the test more... Cross section of cartridges that would be a good cartridge 16.5, the average of efficient. Medalload lost 512 feet/second as the barrel First, lets talk about pressure above, well... 60.7 feet/second per inch of barrel length decreased from 15 to 8 Winchester are two very common cartridges...

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