What exactly causes the BANG! sound in a gun?
In: Other
the pressure wave of the expanding gas.
you have a cartridge, with the main power charge, a primer and a bullet. the firearm sets off the primer, which in turn sets off the main charge, and creates a huge pressure spike, that forces the bullet down the barrel. when the plug of the bullet is removed, you get an expanding shockwave of pressure.
suppressors work by slowing down this pressure wave and thus making the impulse (and thus volume) lower.
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