If I was in Mississippi, The FIRST barrel I would buy would be a 45/70.....From what I read on the boards, Miss. passed a law allowing the 45/70 to be used during black powder season ( THATS MUZZLE LOADING SEASON) . I'm not sure of the technicalities of the law, but if it based on the fact that the 45/70 was originally a black powder ctg, then the 30/30 should be legal as well for that matter.
my2¢