I am under the impression that gas guns have lower chamber pressure tolerances than bolt guns. I am also under the impression that, with the cartridge being equal, muzzle velocity out of a gas gun will be lower than the bolt gun.
So I have two questions
1. If the first statement above is true, why do gas guns have lower chamber pressure tolerances?
2. Given an identical cartridge (identical chamber pressures),why do gas guns have lower MVs than bolt guns?
For question 2, doesn't the bolt only start moving after the bullet is out of the barrel? This should mean that the chamber (and potentially barrel) pressure should be identical because a semi auto bolt in the closed position should be the same as a bolt action bolt in the locked position. Also, the gas port is down the barrel so redirected gasses wouldn't affect the gas pressure in the chamber.
I am very confused about this large discrepancy between bolt actions and gas guns.
So I have two questions
1. If the first statement above is true, why do gas guns have lower chamber pressure tolerances?
2. Given an identical cartridge (identical chamber pressures),why do gas guns have lower MVs than bolt guns?
For question 2, doesn't the bolt only start moving after the bullet is out of the barrel? This should mean that the chamber (and potentially barrel) pressure should be identical because a semi auto bolt in the closed position should be the same as a bolt action bolt in the locked position. Also, the gas port is down the barrel so redirected gasses wouldn't affect the gas pressure in the chamber.
I am very confused about this large discrepancy between bolt actions and gas guns.
