Firstly, we need to address the elephant in the room. Using two proven internal ballistics programs, we’ve shown the amount of velocity increase that can be expected from longer barrels.

At the longer lengths, each additional inch is worth 8-10 fps. TacFlow Academy used it in the video to demonstrate the .50 BMG’s “capabilities … Decades later, the .50 BMG was chambered in high-powered rifles as well. When the M85 was taken out of service, large stocks of ammunition linked with the M15 link remained in US military storage because of the ease with which linked ammunition can be de-linked and re-linked with different (i.e. One of them utilizes LeDuc’s equation and was provided by Bill Davis of Tioga Engineering. Bullet velocity is a very important ingredient of successful long-range shooting.

[citation needed] Under STANAG 4383, it is a standard cartridge for NATO forces as well as many non-NATO countries.

It still has more penetrating power than lighter weapons such as general-purpose machine guns, though it is significantly heavier and more cumbersome to transport. Why the hell is the “Defence” is Cadex Defence” spelled with a “c”? Sorry, your blog cannot share posts by email. Left to right, rear: Mk211, Spotter, Silver tip (Armor Piercing Incendiary), Blue tip (Incendiary), Black tip (Armor Piercing), SLAP-T, SLAP, Tracer, and Ball. An upgraded variant of the M2 Browning machine gun used during World War II is still in use today. Excellent quality, and great customer service from Dave Moore of Spider Firearms. A Captain LeDuc developed this formula just prior to the turn of the century, based on the simple theory that as a bullet travels down a barrel, its velocity increases and the amount of pressure behind it decreases, both exponentially.

Most recently there was some good coverage of it in the January/February, 1994 issue of HANDLOADER magazine. This can lead to poorer accuracy, because it becomes more difficult to consistently shoot the rifle with greater recoil movement.

So, if you have a “little” extra cash burning a hole in your pocket, why not? .510 DTC cases can be made by fire-forming .50 BMG cases in a .510 DTC chambered rifle. For example, if we compare the 750 grain Hornady A-Max bullet with a 2700 fps muzzle velocity from a 28″ barrel to the same bullet at 2950 fps from a 4 footer, we see some big changes. The Springfield .30-06, the standard caliber for American soldiers in both World Wars and a popular caliber amongst American hunters, can produce muzzle energies between 2,000 and 3,000 foot-pounds of energy (between 3 and 4 kilojoules). During World War II the .50 BMG was primarily used in the M2 Browning machine gun for anti-aircraft purposes. Depending on where that length is added, we can expect from 10 to 20 fps per inch. The long range (1 mile+) between firing position and target allows time for the sniper to avoid enemy retribution by either changing positions repeatedly, or by safely retreating. I prefer to use the C7 BC with the VLD type bullets as opposed to the traditional C1 BC because it was developed for long-pointed boattail bullets. The last piece of info is price.

Setting the negative aspects of longer barrels aside, I wondered how much velocity gain could be expected with longer barrels. The .50 Browning Machine Gun (.50 BMG, 12.7×99mm NATO and designated as the 50 Browning by the C.I.P.)

Within the United Kingdom, it is legal to own a .50 BMG rifle with a section 1 Firearms Certificate.[18]. Feb 3, 2020, Stay in the know with the latest from the Ballistic newsletter, Umarex Hammer: A .50-Cal, Big Bore Air Rifle for Hunting Big Game, Genesis Arms Gen-12: The 10-Round, AR Shotgun That Uses a .308 Lower, The Semi-Auto, 6.5 Creedmoor RISE Armament 1121XR Easily Hits 1 Mile, Why the YETI Tundra Haul Has Become Our Favorite Wheeled Cooler, You use of this website constitutes and manifests your acceptance of our. The round is a scaled up version of the .30-06 Springfield but uses a case wall with a long taper to facilitate feeding and extraction in various weapons. WATCH: First Look at the Remington 700 PCR Enhanced Precision Rifle. One thing I miss about working behind the gun counter is the oddball stuff that comes in once in a while. A common method for understanding the actual power of a cartridge is by comparing muzzle energies. In actual practice both by myself and others, the data produced by both programs has proven to be an accurate predictor of velocities.

Using a 28″ long barrel as a practical minimum length, I found that if we increased the length by one inch, on average we could expect a 19 – 21 fps gain in velocity. The concept of a .50 caliber machine gun was not an invention of this era; this caliber (.50) had been used in Maxim machine guns and in a number of manual rapid fire guns such as the original Gatling. The fourth column is the time it takes the bullet to travel to the shorter of the two lengths shown in the first column in milliseconds. To illustrate my point, I ran those velocities through an external ballistics program that computes drop, drift, remaining velocities, and energies. Post was not sent - check your email addresses! The oversized bullet is formed to the bore size upon firing, forming a tight seal and engaging the rifling, a mechanism which in firearms terms is known as engraving. The primary civilian users of .50 caliber rifles, which range in price from around US$1,600[19] for single shot AR-15 upper conversions to well over US$8,000[20] for the semi-automatic, magazine-fed Barrett M82A1, are long-range target shooters; the Fifty Caliber Shooters Association, for instance, holds .50 BMG shooting matches nationwide in the U.S.[21]. When the velocity of a bullet drops below the sound barrier, accuracy is often wild. Since the mid-1950s, some armored personnel carriers and utility vehicles have been made to withstand 12.7 mm machine gun fire, thus making it a much less flexible weapon.

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