Hi guys, first post here, I'm usually over at the bowhunting site but I do hunt with a ML also. Right now I have A CVA Grey Wolf .50 percussion. I really like this gun but I want something more. Does anyone make a percussion sidelock with interchangable barrels from 12 Ga. to .50 cal? If I can't find one I think I'm gonna try to find a 12 ga. double. Any help finding something like this would be appreciated.