Pretending I was a 50yd Bullseye Pistol shooter today, I could really hear the first round "Pop" with my new Sparrow suppressor on an ATI 1911/22. So, what's the science behind it? The air pressure is the same inside, be it 2 sec or 2 minutes after the last shot. Heat, properties of lingering propellant gasses still inside, my failing hearing, noise fairies? Fun to shoot and able to clean the paint off my 4" target. Anyone 'splain sum fiziks to me?