Daryl Thanks I was hoping to be able to use rifled barrels in the 12 by putting it up in the 10 bore action I was hoping to get the whight up to a point that one could shoot it without being betten to badly with recoil and rifleing at about 1/85 or 86". I also want to use plastic 12's in 23/4 or 3" whitch ever would get what I want in speed. I doin't really want to use black powder as I have a .72 muzzle loader for that. This is just something that I would like to do after I retire one needs something to keep you young.
Tom N