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Old August 7, 2012, 11:44 AM   #5
Brian Pfleuger
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Join Date: June 25, 2008
Location: Western Colorado, finally.
Posts: 19,118
Yep, what Frankenmauser said.

The chamber and barrel is a giant heatsink, far more massive than the case. Even when they're "hot", they're much cooler than the case is immediately after firing and they cool it almost instantly.

You literally can not work a bolt fast enough to have the case hot enough to burn you, at least anytime I've ever tried it.

With a semi-auto, the heat isn't even done happening yet (more or less) when extraction begins, no time to cool.

You could compare a 50BMG bolt action to a 22LR semi, same thing. It's not a cartridge specific condition.
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