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The rearward energy of the firearm is the free recoil and the forward energy of the bullet is the muzzle energy. The concept of free recoil comes from the tolerability of gross recoil energy. Trying to figure the net recoil energy of a firearm (also known as felt recoil) is a futile endeavor. Even if the recoil energy loss can be calculated ...
For example, gas-operated shotguns are widely held to have a "softer" recoil than fixed breech or recoil-operated guns. (Although many semi-automatic recoil and gas-operated guns incorporate recoil buffer systems into the stock that effectively spread out peak felt recoil forces.) In a gas-operated gun, the bolt is accelerated rearwards by ...
Felt recoil impulse should not exceed that of a hot .45 ACP +P load shot from an all-steel gun. Bullet's terminal performance at 100 m must be enough to effectively kill a 330-lb. living target. Target's permanent wound cavity should measure a minimum of 35 mm in diameter (1.38 in) and 300 mm in length (11.8 in). [4]
Felt recoil is a little sharper but still very controllable. [5] Because of its relatively high velocity for a handgun round, the .400 Corbon offers a very flat trajectory, which in turn allows the firearms chambered for it more effective range. Ed Sanow also felt recoil was equivalent to 230 gr (15 g) hardball in .45 ACP. [6]
Average recoil from a typical 150-grain load at 2,390 feet per second (730 m/s) in a 7.5 lb (3.4 kg) rifle has been calculated to be 10.6 foot-pounds (14.4 J) felt at the shooter's shoulder. For point of reference, that falls roughly between that of a .410 and a 20 gauge shotgun.
The primary benefit of low peak shock is a decrease in wear and tear on pistol components, a great concern with the +P cartridge in 9 mm, .40 S&W, and .45 ACP. Reduction of peak shock forces also contributes to softer recoil for the shooter, although these "felt recoil" values are subjective.
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The felt recoil is therefore eliminated, enhancing accuracy and assisting control during fully automatic fire. The travel distance of the AK-107 reciprocating parts is less than other Kalashnikov designs, so the cyclic rate is higher at 850–900 rounds/min rather than 600 rounds/min on other AK rifles. However, as the felt recoil is virtually ...