Re: Muzzle Brakes and Chamber Pressure
Impossible since if you're properly loading (fast enough powder) you get a complete burn before bullet exits the barrel and even if you don't brakes start to work when gasses escape the barrel so pressure is all ready declining (in fact peak pressure is way way before bullet is anywhere near the barrel end)...
Though if we go splitting hairs one could say that suppressor would increase pressure as air which is pushed by a bullet has more (now this more part is interesting since i guess it's so minute you'd need a lot of decimal places to put it in numbers) resistance as suppressor holds it in chambers...