I want to neck down some 9mm cases for mounting 30 cal so I can PC without getting GC area coated. The GCs didn't work well but a 308 case covers the entire shank and is good for the nose also. Thinking of cutting of the shoulder off a 308 case, fill with lead as a pusher. Set a 9mm on top and push into a Hornady 308 case sizer die. Lots of case lube for sure, anybody have any idea if it would work? I have a Lee press which should be strong enough. Never reformed cases before, I'd anneal the 9mm. If it works, it should do for doing PB also. 308 cases will work but I don't like to waste them.