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never specified smokeless or black powder only.

and considering that the proof house would in theory test to the same strength. smokeless loads ARE supposed to stay in the safe range for the...

thing is, the company in the 2010 + who did that Patterson conversion I read about, used the Italian percussion cylinders and made no specific requirements in regards to ammunition or not.

Anyone ever try to do the original method of slicing up the factory cylinder, and pinning/screwing a plate on the rear to make the thickness correct and then drilling through the whole thing?...