<*(((><
Member
- Joined
- Feb 1, 2013
- Messages
- 2,747
Also to clarify - the gas piston MUST be in motion before the bullet leaves the barrel. Simple physics. We need the piston to move, meaning it has to accelerate, and against spring tension. So the gas pressure (force distributed over an area) has to accelerate the piston and start it moving while the bore is still pressurized - once the bullet leaves the barrel, that pressure drops to zero, meaning the force the gas exerts against the piston drops to zero, and it can no longer accelerate - move - the piston. The bore and piston “cylinder” must be under pressure to apply force on the piston, so the bullet still has to be holding pressure in the bore. Once a force is exerted, the piston accelerates - starts moving - and it can only remain moving after the bullet leaves the bore and the force/pressure subsides by its own inertia (state of movement, current velocity when the force stops acting). So it’s patently false to say “the bullet is gone before the piston starts moving.”
I don’t know how many times whether it be ARs or semi-auto handguns I’ve heard people say the bullets left the rifle/pistol before the recoil or movement occurs.
Last edited: