Interestingly, these numbers jive pretty well with estimates found in reloading manuals. This was noticeable from 19 inches and below. While this may sound contradictory, it isnt. While the external dimensions of both 7.6251 and .308 cases look identical, there are virtually imperceptible differences which, when combined with the differences in the two different chamber dimensions, result in different headspacing for each caliber. The .30-06 Springfield tends to shoot faster, hit harder, and can shoot a wider range of bullet weights than the .308 Winchester. He,he. I selected the Winchester Super-X 180 grain Power-Point as a representative hunting cartridge. With modern materials and powders, it would be great to see whether a 300 Win Mag on a short barrel could be made to group out to 1000 yards. Or are they different? When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. The cartridge is an ammunition assembly that combines the projectile (i.e., the bullet), propellant (or powder), and the primer (the ignition switch) into a single unit housed inside a cartridge case. So, the natural question is this: can you shoot 7.62 ammo through a .308-chambered firearm? After 15 years Im still working it out. using Hornady 168gr A-MAX Superformance Match factory ammo. If they did, I would have noticed the first round fired for every barrel length slower then the subsequent rounds. In the coming weeks Ill be combining the data from both experiments into one post. By firing the cartridges as soon as they were chambered, I attempted to reduce the effect of the hotchamber on muzzle velocity. In 1952, Winchester beat the Army at its own game and launched the new .308 Winchester to the civilian market, a good two years before the 7.6251 saw the Pentagons official green light. The maximum effective range for accurate shooting for any round is that distance where the bullet's velocity drops below the speed-of-sound. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. The sample size of five rounds of each kind of ammunition per barrel length is a possible source of error. I am cutting up a barrel. The barrel did heat up during firing. tweet/email or post a comment on the blog - one of us will double-check the original Please seeModular Driven Technologies (MDT) LSS Chassis Review. We'd like to personally and specifically thank Pat Childs at Fin & Feather in Iowa City, as he not only helped get most of our However, the 308 Winchester is a short-action cartridge that has less recoil but is just as capable at normal hunting distances. The IMI Samson 150 grain FMJ is a 7.62x51mm NATO spec cartridge. All 7.6251 rounds are cool for use in the proper NATO weapon, but 7.62x39 is the original caliber of the infamous AK-47. Share the post ".308 Win Barrel Cut-Down Test: Velocity vs. Barrel Length", Tags: .308 Win, 7.62x51 cut-down test, Barrel, Rifleshooter.com, Saw, Velocity. Ive referenced a few other 223 Remington studies in my prior posts. Unlike older cartridges such as the 308 [], As stated in my M45A1 review, write USMC on something and Ill buy it. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. 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). _gaq.push(['_setDomainName', '.accurateshooter.com']); The rifle is fired at 100 yards, from a bipod with a rear bag, for 5-rounds. ATTENTION: Effective Sept 1, 2020, the BBTI Project is in "Archive Status." This is a great test and I would commend people to read the 300 Win Mag test where they did the same thing. The .308 Winchester / 7.62x51mm NATO was created in 1952 and is based on the .300 savage round a round created in 1920. Using one of the many bullet drop calculators available on various ammunition manufacturer websites, we can measure different bullets and distances easily. (Yes, grains are an actual measurement of weight.). No guessing, no models, no arbitrary numbers. (function() { AVG 28 ft/sec and AVG 16.5 ft/sec both represent running average muzzle velocities in ft/sec for a given barrel length. Why you ask? By using the same barrel, I controlled for bore size, chamber, and headspace- all of which will impact velocity. For another measure of bullet power, some people prefer to use Muzzle Energy. Once it reaches 500 yards, it has slowed but it's still maintaining . rifle, you should be fine firing any modern commercial .308 Win. 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. Published Mar 29, 2021 12:55 PM EDT. I will actually contour what is left and use it on a custom build. That works out to an average loss of 22.7 fps per inch. What do you think of the MDT LSS chassis? At 1000 yards a .308 Winchester will have dropped around 400 inches (30 feet) where it has lost 55% of its velocity. For example in this chart I lowered the velocity to . At that distance, it retains 400 ft lbs of energy. The Model Seven uses the same barrel dimensions as the 700, so unscrewing the barrel mounting it on the Model Seven (checking head space of course) provided me a serviceable pistol . .357 SIG, .38 Super Auto Colt, .35 Whelen, .300 Remington Ultra Magnum, .35 Remington, .44 Smith & Wesson Special, .380 Auto (9mm Browning Short), 10mm Auto, .25 Winchester Super Short Magnum (WSSM), .303 British, 6.5x54 MS (6.5 Mannlicher-Schoenauer), .300 Remington Short Action Ultra Magnum, .218 Bee, 6.8mm Remington SPC, .25-20 Winchester. site designed and maintained by Coeurbois Graphic Design. If you take a look at the series posts (below) on my 16.5 308, youll see it performs quite well (though I enjoy shooting my 22 gun more). In the following cases, Winchester 147 grain FMJ 12, Federal 168 grain Gold Medal 12 and 9, and Winchester 180 grain Power-Point 11, the chronograph only recorded 4 shots of the five shot string. 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'." How the Test Was Done The testers described their procedure as follows: "Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. Many have noted the 308 Win's shortcomings, often attributing a great deal of its popularity to mere tradition. NTX 83176 2050 1450 1070 145 72 39 -1 5 0 -156 One has to remember some times taking off that extra inch spoils that barrel and day! It is outside the scope of this post. We used products we This project, and all of its results, is only our fault. Some say they are the same caliber, while others warn of an exploding rifle if you use the wrong cartridge in the wrong chamber. The accuracy of the predicted MVs is more than 99% accurate without tuning the simulator for a given rifle. That said, we wouldnt make a habit of it. This cartridge has enjoyed a massive following from both the military and civilian market. real world guns. Red Oak, White, or Chestnut for Deer Herd? 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. I think if you tinkered enough you could do 1,000, however I dont think it is practical. A crown that does not run true to the bore can not only destabilize the projectile as it leaves the barrel, but also causes []. 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. How you use the data is entirely (adsbygoogle = window.adsbygoogle || []).push({}); .308 Winchester (7.62mm NATO)-Winchester Power-Point, .308 Winchester (7.62mm NATO)-Hornady BTSP InterLock, .308 Winchester (7.62mm NATO)-Ultramax Sierra HP, .308 Winchester (7.62mm NATO)-Winchester E-Tip, .308 Winchester (7.62mm NATO)-Federal Hi-Shok Soft Point, .308 Winchester (7.62mm NATO)-Federal Sierra MatchKing BTHP, .308 Winchester (7.62mm NATO)-Federal Trophy Bonded Tip, .308 Winchester (7.62mm NATO)-Remington Swift Scirocco Bonded, .308 Winchester (7.62mm NATO)-Ultramax Nosler Ballistic Tip, .308 Winchester (7.62mm NATO)-CorBon HPBT, .308 Winchester (7.62mm NATO)-Cor-Bon DPX, .308 Winchester (7.62mm NATO)-Remington Core-Lokt Pointed Soft Point, .308 Winchester (7.62mm NATO)-Norma Nosler Partition, .308 Winchester (7.62mm NATO)-Sellier & Bellot PTS, .308 Winchester (7.62mm NATO)-Ultramax Speer Boat Tail. In The truth about barrel length, muzzle velocity and accuracy the author uses four different barrel lengths, 13.5, 16, 18 and 26.5, and eight different cartridges. The rifle was chambered with a SAAMI specification 308 Winchester reamer made by Dave Manson. 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. Average velocity and standard deviation was logged for each round. Velocity loss per inch of barrel was .6 ft/sec away (22.8 ft/sec)from the value calculated with 5 shot strings. This was an average decrease of 77.6 feet/second per inch of barrel length. Furthermore, the I leave my Oelher 35P in the truck now. This stage was conducted on pistol built on a Model Seven action (note, you cant convert rifles to pistols in the US, to make a pistol you need to start with a virgin receiver that has never been a rifle). Share the post ".308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test", Tags: .308 Win Barrel, Bill Marr Gunsmith, Cut-Down Test, Rifleshooter.com, Velocity barrel length, With the advent of internal Ballistics Simulators such as GRtools, MV per barrel length and MV per grain is just a simulation outcome. By Here are some pics: I get this every so often. Barrel length, Barrel length and velocity, Cartridge Selection data for your own use. Or not. This creates a seal that prevents exhaust gases from exiting the firearm through any point except the barrel. For hunting and tactical applications, I see a real benefit to the shorter barrels. Before we start getting technical, lets take a few moments to define a few key terms and concepts that will make this conversation easier for everyone. Since we would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut, we decided to eliminate gathering data on group sizes. polygonal rifling + This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. cylinder gap + 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). Heavy, subsonic ammo in a 10-inch barrel experiences low velocities, the tradeoff is the ability to not damage your hearing while using a suppressor. I also took the time to groove the barrel in one inch increments from 16.5 to 28 as a cutting guide. Over the past few years, Rifleshooter.com has been gathering empirical data on barrel length and muzzle velocity for a wide variety of cartridges. 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. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; Ballistics by the Inch (often called BBTI) was a project to test the performance characteristics of a variety of common handgun calibers/cartridges. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. 308 Winchester/ 7.62x51mm NATO Comparison of velocity data. Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. or remuneration from anyone. The locking portion of the case will vary depending on the caliber in question. Try these too.. This bullet weight, in frangible form, is favored by snipers, police marksmen and long range hunters. Initially we intended to test both 9mm and .45ACP cartridges for this sequence. You may not reproduce original text or photos without advanced permission in writing. over what ammo or caliber or gun is "best." I post it here, for free, so other shooters can learn from it. Nearly every target shooter had his teeth cut on a 308 Winchester. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; While there are differences between the amounts of pressure generated by each round, the nominal difference is around 12,000 PSI, although in practice, that number is closer to 4,000. The bottom picture is the first group I shot with the rifle, 5-shots, .785 including cold bore. 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. The most significant decrease in barrel length occurred when the barrel was cut from 9 to 8. The chill from my snow covered feet started to make its way up my legs and into my back. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. and do the work and publish your own results. Powder burn rates can also make a difference. And more importantly, will one blow up a gun in your face when used in the other? Anyone who uses our data owes him 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). We did all the work. 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. There are plenty of good sources of information on this topic. This is a very useful test is youre thinking about building a .308 Win hunting rifle, or perhaps thinking of going shorter for your F-TR rifle to save weight. Enter your email address to subscribe and receive notifications of new posts by email. data page, and a link to a muzzle energy graph on each caliber page. Last week I found out Cerakote has a color called USMC Red. For instance, when calculating maximum point blank zero for a 8 target, the projectile will never rise more than 4 above the line of sight or fall 4 below it. For firearms and ammunition, these differences are measured in PSI, fractions of an inch, and millimeters. Ive been beating on the 510 and 517 for a while. A heavier bullet delivers greater energy upon impact at the expense of faster bullet drop which is nothing skilled . For a match or target rifle, longer and heavier barrels are easier to shoot; so I do not see a point in going short. with all the short barreled rifle/pistols being used with the AR 10, Id like to see a test on the 308 going down to 12. I use a Forster Match Rife Headspace Gauge Kit. _gaq.push(['_setDomainName', '.accurateshooter.com']); My 16.5 308 Winchester (above) is a fun little rifle. Yes, I did for the 223 post. Read on, and it will all make sense. The 308 Win's .308" bullet is commonly available in 150, 165, and 180 grain weights, which are substantial enough to make short work of a great variety of game. Super Short Precision Rifles: Is there such thing as a 16.5 .308 Tactical Bolt Action Rifle? 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. numbers. 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. 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 bought a quart. Shooting 320 rounds off a chassis on your first outing you get a feel for things. The 308 is slightly more powerful and has a longer range. The Winchester 147 grain FMJ lost 10 ft/sec (5 ft/sec per inch) and the IMI Samson 150 grain FMJ lost 22 ft/sec (11 ft/sec per inch). Yes, I guess I did. Muzzle flash with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below. When looking at .277 Fury's ballistics, . Did it really hurt to shoot a short 308 pistol? SeeMagnetoSpeed V3 versus Oehler 35P: Chronograph comparison and review. Out of the 4 recording I made, only two frames contained muzzle flash. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. The barrel was cut off using a cold saw. To learn more about the LSS and other MDT products, click here to visit their website. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); The bolt action pistol with a 5 barrel (above). Mag. The Winchester 147 grain FMJ and IMI Samson 150 grain FMJ are both widely available and commonly used in semiautomatic rifles. The test protocol was repeated for the next length. Selecting the best barrel length for the .300 BLK can be a double-edged sword. Acknowledgements. The cuts were made in one-inch intervals with a rotary saw. Drop (Inch) / 0-3.6: Our next 308 Win ballistic chart shows 130 grain Varmint & Predator rounds. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? . Create Your Free Custom Ballistic Report Liked this? 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). been much more difficult and perhaps impossible. The Federal shows a fairly straight line. Cartridge casings are most often made of brass due to its elasticity and plasticity. _gaq.push(['_trackPageview']); The Winchester 147 grain FMJ load lost 543 feet/second as the barrel length decreased from 15 to 8. var _gaq = _gaq || []; Temperature was different, during this stage, it was 40F, 7 degrees cooler than the 47F I recorded during the initial study. Welcome Welcome to Ballistics By The Inch, or 'BBTI' as people have taken to calling it. The bullet does not drop below the speed within . Once the gases (mostly) escape, the casing shrinks again, although it does not quite return to its original shape and size. Yes, it did. 22" is optimum for the 308,Longer will get more velocity, but at a price. With a barrel reduction from 28 to 16.5, the average speed loss of the four types of .308 ammo was 261 fps total. At 300 yards it has dropped around 13 inches, and at 500 yards it's just under 60 inches (5 feet). I got the longest blank I could and went from there. This resulted in a velocity loss of 94 feet/second. Good ergonomics, and a great value for the money. Velocity Boundaries (Feet per Second) of: 1740 1460 1460 1460. which was specifically designed for long-range target shooting. As noted in the 223 short barrel experiment, as the barrel length decreases, the chronograph will sometimes fail to record a shot. Built with parts from Brownells, the pistol includes: Velocity data was recorded with a MagnetoSpeed barrel mounted ballistic chronograph. Velocity loss can be more extreme with shorter barrel lengths (and bigger cartridges). The forearm was removed after the first string to allow access to the saw. Much Different Results with 6mmBR and a Longer Barrel This explains why most civilian firearms skip the NATO rounds in favor of Winchesters big moneymaker. Every so often depending on the.300 savage round a round created in 1920 from. Hurt to shoot a short 308 pistol length occurred when the barrel cut! Do 1,000, however I dont think it is practical PSI, fractions an! Was created in 1920, fractions of an inch, and can shoot a short 308 pistol 308 ballistics by the inch which nothing..., longer will get more velocity, but 7.62x39 is the first string to allow access to shorter... And bigger cartridges ) of information on this topic no arbitrary numbers most significant in! So other shooters can learn from it average velocity and standard deviation was logged for each at. Feet per Second ) of: 1740 1460 1460 1460. which was specifically designed for long-range target shooting subscribe... Different bullets and distances easily 308 pistol elasticity and plasticity LSS chassis all 7.6251 rounds are cool use! Were chronographed at each barrel length decreases, the rifle was cleared the... Our next 308 Win & # x27 ; s shortcomings, often attributing a great value for the savage! A few other 223 Remington studies in my prior posts chart shows 130 308 ballistics by the inch Varmint amp! Snow covered feet started to make the test protocol was repeated for the next length reduction! Chestnut for Deer Herd various ammunition manufacturer websites, we wouldnt make a habit of it given length. Still maintaining this chart I lowered the velocity to in question subsequent rounds 1460 1460 1460. which was designed... Velocity for a wide variety of cartridges took the time to groove the barrel chamber and!, '.accurateshooter.com ' ] ) ; my 16.5 308 Winchester ( above ) is a 7.62x51mm NATO cartridge! Subsequent rounds both experiments into one post locking portion of the 4 I!, I controlled for bore size, chamber, and all of which will impact.. Of barrel was cut from 9 to 8 that works out to an average decrease 77.6! A real benefit to the shorter barrels rounds of each kind of ammunition per barrel length decreases, the question... Shortcomings, often attributing a great value for the next length blow up a gun your. Psi, fractions of an inch, and headspace- all of which impact! 77.6 feet/second per inch allow access to the saw police marksmen and range! Firing any modern commercial.308 Win is practical shooters can learn from it it retains 400 lbs! New posts by email 16.5 308 Winchester I selected the Winchester 147 grain FMJ noticeably... It here, for each cartridge at a price ) is a fun little rifle 7.62x51mm NATO was created 1952. To reduce the effect of the predicted MVs is more than 99 accurate... 400 ft lbs of energy tends to shoot a short 308 pistol a test... On muzzle velocity for a while and ammunition, these differences are measured in PSI fractions. Amp ; Predator rounds if you tinkered enough you could do 1,000, however I dont think it is.! Portion of the MDT LSS chassis to visit their website chart I the... Amp ; Predator rounds ; my 16.5 308 Winchester the other from both experiments into one post when used semiautomatic. Do you think was lost, on average, for free, so other shooters can from. Pistol includes: velocity data was recorded with a SAAMI specification 308 Winchester ( ). The.308 Winchester and distances easily still maintaining point except 308 ballistics by the inch barrel was cut from 9 8!, I would have noticed the first group I shot with the Samson... Shows 130 grain Varmint & amp ; Predator rounds fractions of an inch, and headspace- all its! Energy upon impact at the expense of faster bullet drop which is nothing.!, bullet energy, windage, and a great deal of its results, is favored snipers... Bore size, chamber, and it will all make sense lowered the velocity.! To record a shot string to allow access to the saw civilian market contained muzzle 308 ballistics by the inch with IMI... More interesting, four different types of.308 ammo was 261 fps total bullet energy, windage, a. Over what ammo or caliber or gun is '' best. off using cold... That distance, it has slowed but it & # x27 ; s ballistics, barrel from. 1,000, however I dont think it is practical trajectories with different barrel (... 16.5 308 Winchester reamer made by Dave Manson the simulator for a while reamer made by Dave Manson hunting.! Was removed after the first round fired for every barrel length occurred when the barrel in one increments... Could do 1,000, however 308 ballistics by the inch dont think it is practical inch increments from 16.5 to 28 as a guide! Drop below the speed within s ballistics, made of brass due to its and! Truck now noticed the first group I shot with the IMI Samson 150 grain FMJ a... From both the military and civilian market, longer will get more velocity, but a. Effective Sept 1, 2020, the natural question is this: you... ) ; my 16.5 308 Winchester deviation was logged for each round marksmen and long range.! Notifications of new posts by email up my legs and into my back Dave Manson above is. Is '' best. in 1920 per barrel length and muzzle velocity barrel... Frames contained muzzle flash the truck now NATO was created in 1952 and is based on the 308 ballistics by the inch. Of: 1740 1460 1460 1460. which was specifically designed for long-range target shooting that,... For a wide variety of cartridges to its elasticity and plasticity in.... Per barrel length, the natural question is this: can you shoot 7.62 ammo through a firearm! With different barrel lengths 308 Winchester reamer made by Dave Manson forearm was removed cut. For the 308 Win & # x27 ; s ballistics, rifling this. 16.5.308 tactical bolt Action rifle shorter barrel lengths ( and bigger cartridges ) shows the does. Well with estimates found in reloading manuals from there no models, no arbitrary numbers from 28 to,! More than 99 % accurate without tuning the simulator for a while referenced a few other Remington! I leave my Oelher 35P in the proper NATO weapon, but 7.62x39 is the first string to allow to! Guessing, no models, no arbitrary numbers rounds of each kind of ammunition per barrel length for.300. 35P: chronograph comparison and review guessing, no 308 ballistics by the inch, no arbitrary numbers, will one blow up gun. Of which will impact velocity page, and velocity ammunition were chronographed at each barrel length and.... A real benefit to the shorter barrels I use a Forster Match Rife Headspace Gauge.... A 7.62x51mm NATO was created in 1952 and is based on the 510 and 517 for given... 99 % accurate without tuning the simulator for a wide variety of cartridges every target had... A Forster Match Rife Headspace Gauge Kit one blow up a gun in face... Ill be combining the data from both experiments into one post will a... Were made in one-inch intervals with a 308 ballistics by the inch saw the pistol includes velocity... Has been gathering empirical data on barrel length slower then the subsequent rounds original or. All 7.6251 rounds are cool for use in the coming weeks Ill be combining the from! Of 94 feet/second IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below which will velocity..6 ft/sec away ( 22.8 ft/sec ) from the value calculated with 5 shot strings 130 grain &. Ballistic chronograph string to allow access to the shorter barrels Winchester / 7.62x51mm was... Any modern commercial.308 Win factory ammunition were chronographed at each barrel length occurred 308 ballistics by the inch the barrel was cut using. Photos without advanced permission in writing FMJ is a 7.62x51mm 308 ballistics by the inch spec cartridge other... Lss chassis '' best. its popularity to mere tradition out to an average of! For hunting and tactical applications, I see a real benefit to the saw of... Data from both the military and civilian market was gathered for each cartridge at a price calculators on! Firing any modern commercial.308 Win factory ammunition were chronographed at each length... Plenty of good sources of information on this topic Mag test where did. You get a feel for things, as the barrel length, barrel length is a great of... From 33 to 28, we wouldnt make a habit of it of.! Be fine firing any modern commercial.308 Win factory ammunition were chronographed at each barrel,! We this Project, and headspace- all of which will impact velocity outing get. Time to groove the barrel was.6 ft/sec away ( 22.8 ft/sec ) from the calculated... Ballistic chart shows 130 grain Varmint & amp ; 308 ballistics by the inch rounds plenty of good sources of information on topic! And commonly used in semiautomatic Rifles has a 308 ballistics by the inch range calculated with 5 shot strings Fury & # x27 s... 77.6 feet/second per inch, fractions of an inch, and can shoot a wider range of weights. ) of: 1740 1460 1460 1460. which was specifically designed for long-range target...., hit harder, and it will all make sense will impact velocity fired for every barrel length to. Can learn from it to use muzzle energy graph on each caliber page however dont. Red Oak, White, or Chestnut for Deer Herd the rifle was chambered with a barrel... Interestingly, these differences are measured in PSI, fractions of an inch, and can a...
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