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The US Army's Ballistic Research Laboratory measured a ballistic coefficient (G7 BC) of 0.151 and form factor (G7 i) of 1.172 for the SS109/M855 ball projectile. [36] The Swedish military has measured the bullet velocities of SS109/M855 military cartridges at 4 m (13.1 ft) from the muzzle fired from differing barrel lengths.
The table below gives a list of firearms that can fire the 5.56×45mm NATO cartridge, first developed and used in the late 1970s for the M16 rifle, which to date, is the most widely produced weapon in this caliber. [1]
A guide to the recoil from the cartridge, and an indicator of bullet penetration potential. The .30-06 Springfield (at 2.064 lbf-s) is considered the upper limit for tolerable recoil for inexperienced rifle shooters. [2] Chg: Propellant charge, in grains; Dia: Bullet diameter, in inches; BC: Ballistic coefficient, G1 model; L: Case length (mm)
If the bullet velocity is capped at 1,000-Feet Per Second / FPS in order to subdue the noise of firing, then the impact can be improved by increasing the weight of the bullet. The 357 Auto can be loaded with bullets in .358-caliber, while still fitting within the AR-15 COAL of 2.260". Bullet weights are currently available between 225gr-310gr
According to Browning, the .223 WSSM offers a 600 ft/s (180 m/s) gain with a 55 gr (3.6 g) bullet over the standard .223 Rem. It also offers a 440 ft/s (130 m/s) gain over the .22-250, a popular varmint round. This comes out to a 600 ft⋅lbf (810 J) gain over a standard .223 Rem, and a 350 ft⋅lbf (470 J) gain over the .22-250. [9]
The specification included a Remington-designed bullet and the use of IMR4475 powder, which resulted in a muzzle velocity of 3,250 ft/s and a chamber pressure of 52,000 psi. [ 8 ] In the spring of 1962, Remington submitted the specifications of the .223 Remington to the Sporting Arms and Ammunition Manufacturers' Institute (SAAMI).
22TCM AR-15 pistol with 8.5" barrel and DI gas system. 22TCM AR mags, 18 rounds. 40gr factory ammo, and 55gr bullets in handloads. Made by Tim, The AR Guy 22TCM AR-15 magazines designed to take the 40gr factory ammo, holds 18 rounds. Made by Tim, The AR Guy. 22TCM AR-15 mag with handload. Designed to be reliable with longer bullets.
Tillverkade ("assembled by") is the final manufacturer of the assembled cartridges; Krut ("gunpowder") is the propellant manufacturer, Hylsor ("cases") is the cartridge case manufacturer, Tändh ("primers") is the primer manufacturer, and Kulor ("balls") is the bullet manufacturer. Parti ("Lot") is the Lot Number. The old method was made up of ...