1911Tuner
Moderator Emeritus
re:
John...Are we gonna do it again? Stand ready, you scallywag!
The bullet causes the equal and opposite effect that we know as recoil for as long as it's in the barrel and moving. The longer it's in the barrel...and moving...the longer it works to impart that equal and opposite reaction. How much more after initial impulse results mainly in a longer time in recoil, but not a "harder" recoil. Hypothetically...Two pistols of equal weight...one with a 10-inch barrel and the other with a 5-inch barrel fired with equal rounds would result in the same "punch" in your hand. The longer tubed gun would just push for a little longer time. Could you actually feel a difference? Probably not. The difference in dwell time in the barrel would be tiny. It doesn't take long to accelerate a bullet another 200 fps once it's already moving...and it would get through another 5 inches of barrel like right now. Once the bullet is gone, recoil as we know it is over.
The..ejectiva... (John...ya gotta stop usin' these 20-dollar words on me.)...of the gasses also have an effect, but that effect in a pistol is, for all practical purposes...of no consequence. Roughly equal to the mass/weight of the powder charge at about the speed of sound. For a typical .45 ACP cartridge, that would equate to a 5-grain bullet at about a thousand fps. Recoil generated would be about 1/8th that of a .22 Stinger fired in a K-frame revolver.
The effect would be greater in, say, a .30-06 because of the heavier powder charge at higher pressures...and the fact that the bottlenecked case creates a sort of rocket engine...or a venturi effect...and causes the...ejectiva to accelerate as it escapes...Like the nozzle on a garden hose.
John...Are we gonna do it again? Stand ready, you scallywag!
The bullet causes the equal and opposite effect that we know as recoil for as long as it's in the barrel and moving. The longer it's in the barrel...and moving...the longer it works to impart that equal and opposite reaction. How much more after initial impulse results mainly in a longer time in recoil, but not a "harder" recoil. Hypothetically...Two pistols of equal weight...one with a 10-inch barrel and the other with a 5-inch barrel fired with equal rounds would result in the same "punch" in your hand. The longer tubed gun would just push for a little longer time. Could you actually feel a difference? Probably not. The difference in dwell time in the barrel would be tiny. It doesn't take long to accelerate a bullet another 200 fps once it's already moving...and it would get through another 5 inches of barrel like right now. Once the bullet is gone, recoil as we know it is over.
The..ejectiva... (John...ya gotta stop usin' these 20-dollar words on me.)...of the gasses also have an effect, but that effect in a pistol is, for all practical purposes...of no consequence. Roughly equal to the mass/weight of the powder charge at about the speed of sound. For a typical .45 ACP cartridge, that would equate to a 5-grain bullet at about a thousand fps. Recoil generated would be about 1/8th that of a .22 Stinger fired in a K-frame revolver.
The effect would be greater in, say, a .30-06 because of the heavier powder charge at higher pressures...and the fact that the bottlenecked case creates a sort of rocket engine...or a venturi effect...and causes the...ejectiva to accelerate as it escapes...Like the nozzle on a garden hose.