First. Welcome Duffer!

Nothing wrong with lurking around. I do it many places. I have messed around with these in my 52. I bought them off a guy on gunbroker who has them always listed.

These are 370"s and 430's I believe. They shot well but I haven't had time to mess with load development, etc.

This picture is a couple I ran through to see how they were catching the rifling. I was wrapping with teflon tape.