I have posted this in the Cast Boolits sub-forum, but maybe it needs to be here.
I have just slugged the bore on my newly acquired Winchester 1894(mfg 1895) in 38-55 and measured the groove diameter at .381-.382. Am planning to do a pound cast as soon as I get some Starline 2.125" brass with the thin neck walls (~.0072"). With such a large groove diameter is there any hope to be able to chamber a lubed boolit that is .382 or fatter? I have read that paper patching sometimes is the only solution for this situation.