Well, this is a simple situation where i was trying to keep an explanation simple. what am i missing? pressure times the area is force. simply put, the average force (however you want to arrive at that) exerted over the time the bullet is in the barrel will give velocity when bullet weight acceleration are figured. BTW The area under a curve with pressure in the y axis and time in the x-axis will give the work done on the bullet. what is it you think I am not latching on to? - how to open up my physics book and write some equations? Thanks for your "help"
Not directly it won't. That's what you're not getting. The work done is area under a pressure-
volume curve.
