Norinco 9mm

unspellable · 02-14-2010, 09:54 PM

Pressure curve has absolutely nothing to do with anything as far as the Luger's functioning is concerned. Impulse has EVERY thing to do with it. The Luger has a RECOIL operated action, not a gas operated action where pressure curve might matter.

The cannon velocity is determined by impulse. The cannon momentum determines functioning. The pressure has fallen to essentially zero before the action unlocks. (Unlike some other recoil operated actions where the timing is such that the action unlocks sooner.) The pressure curve enters into this only insofar as you have to have a pressure curve in order to launch the bullet in the first place. A fast powder vs. a slow powder will make absolutely no difference given the same impulse for both loads.

02-14-2010, 09:54 PM	#40
unspellable User Join Date: Jun 2002 Location: Iowa Posts: 769 Thanks: 0 Thanked 20 Times in 12 Posts	Pressure curve has absolutely nothing to do with anything as far as the Luger's functioning is concerned. Impulse has EVERY thing to do with it. The Luger has a RECOIL operated action, not a gas operated action where pressure curve might matter. The cannon velocity is determined by impulse. The cannon momentum determines functioning. The pressure has fallen to essentially zero before the action unlocks. (Unlike some other recoil operated actions where the timing is such that the action unlocks sooner.) The pressure curve enters into this only insofar as you have to have a pressure curve in order to launch the bullet in the first place. A fast powder vs. a slow powder will make absolutely no difference given the same impulse for both loads.