Help me out, I have an SB2 10 ga. and want to get a slug gun. I can't make up my mind if I want to opt for the 12 Ga., 3" Chamber, 24" Fully Rifled, Bull barrel that interchanges with my 10 ga. frame or just buy a Ultra Slug Hunter 20 ga. and then later on get a muzzleloader barrel for it. I kinda want to get a 20 ga and this seems like the better option in my mind, since I will want a muzzleloader barrel eventually. Talk to me folks, what would you do?