I had an idea the other day and before I spent time on it I wanted to run it by you to see if it is feasible.
I've been thinking of a way to make homemade slugs for checking barrels etc and thought it might be nice to cut the back of a 38 special case off, lube the inside with case lube, place it on a piece of metal and then fill it full of molten lead and finally push it out when cool.
OR
Make a contraption like a homemade cake cutter with the nail to push out the slug.
Anybody tried anything like this before?