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Ha ha, I've done that in the past a tub of 40s manufacture 303, brasso and cloth. They looked so pretty when they were finished.

Grandpamac you forgot to mention that the 174 grain rounds caused functioning issues with the recently adopted m1 grand so back to the little 150 they went.
Ironically the longest case full power...

They may be a few click bangs in that lot. About 1 in 50 of the 42 cac 303 I've chewed through did that, it lets you see if you are flinching.
Yes the primers will be corrosive us military...