Originally Posted by FMJBT
Dwell time of the round in the chamber can also have a significant impact on powder temperature, especially in semi autos after long strings of fire.
All the more reason to shoot a bolt gun...
You get to control chamber dwell time by not loading rhe chamber and closing the bolt until a few seconds before you are ready to fire.
Those damn magazine-fed autoloaders make the assumption that you are firing quickly as they put a new round in the chamber right after you fire each round!
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