 I would offer a shorter dwell time makes it harder on your gun. Now, I'm not a gun designer, and you are. I probably screwed that up completely. No, that's actually, I think you did really well. A really simple way for people to picture it. If you think where the gas port is in the barrel, the distance from the gas port to the muzzle is, don't look at that as distance, look at that as time. That is the length of time that the system is pressurized. Once the bullet leaves the muzzle, the pressure drops to zero.