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Hey Paul,

Trick question.

Most of the Reloader Series of Powders is very mildly (compared to some others) temperature sensitive, due to being "Double Base" (Nitroglycerin & Nitrocellulose).

However, there are some loads, with some of the Reloader Powders, in certain cartridges that exhibit severe heat sensitivity.

(I'm thinking it would be the "faster" Reloader Powders in the "over bore capacity" cases)??

Wish I could remember if I read that in the HANDLOADER magazine, or the Rifleman?...??

Hope this helps.

Later, Mark
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