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Gene · 10-03-2001, 03:48 PM

The velocity of a bullet will continue to increase as long as the pressure multiplied by the area of its base exceeds the friction (or drag) between the bullet and the barrel.

The mainspring absorbs the kinetic energy (not the momentum) of the recoiling parts. Since a more massive recoiling assembly has less velocity and energy, a weaker spring is sufficient. Note that mainspring strengths measured by HJones for different Lugers showed no significant differences, except for the carbine which was much weaker (and, of course, the 02 carbine also has an assisting spring in the forearm).

10-03-2001, 03:48 PM	#7
Gene User Join Date: Jun 2002 Posts: 23 Thanks: 0 Thanked 0 Times in 0 Posts	Re: Longer barrels The velocity of a bullet will continue to increase as long as the pressure multiplied by the area of its base exceeds the friction (or drag) between the bullet and the barrel. The mainspring absorbs the kinetic energy (not the momentum) of the recoiling parts. Since a more massive recoiling assembly has less velocity and energy, a weaker spring is sufficient. Note that mainspring strengths measured by HJones for different Lugers showed no significant differences, except for the carbine which was much weaker (and, of course, the 02 carbine also has an assisting spring in the forearm).