About three years ago Mississippi aproved 45-70 (pus several other calibers) black powder in all but a couple of WMA. Has to be a single shot breech loading over 35 caliber. Not enough people were hunting during black powder season. To many deer. H and R 45-70 is the number one selling rifle. My T/C Black Diamond has become a safe queen. Paper is full of used black powder guns for sale here.Why can you use a 45/70 during black powder season. It dosent load like a black powder? it has a cased shell,, Don't think that the conservation man will go with that one walking out with a deer on dec 19th, to check your tag and deer, in Missouri, Mississippi might be different.