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Old December 6, 2012, 02:36 AM   #7
Senior Member
Join Date: January 24, 2011
Posts: 727
Never had problems in the Mojave Desert in 110+ degree weather with W231, W296, W748, AA#2, AA#7, AA#9, etc. etc. showing sudden pressure spikes or destroyed actions in over 20 years of reloading. Ball powders have been around for well more than 30 years...they were used in Vietnam.

Follow good loading practices and you'll have no surprises due to high heat.
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