Originally Posted by BrentD, Prof
I believe you could bust a sizing die on an RMC case. But you could probably also turn them down once or twice and have still plenty of brass left over.


I wouldn't put a RMC hull in a conventional sizing die. I use a block of steel that someone drilled a 10 gauge diameter hole in and either use the arbor press or a sledgehammer with sizing wax. Even so I have 8-10 that are still too over sized to fit in my 10 gauge and that won't fully re-size using my method.

I have become addicted to English hammered shotguns to the detriment of my wallet.