I have a friend that is going to be visiting Indy and he was asking if I knew of any gunshops in the area that stock traditional black powder supplies.
Any input would be greatly appreciated, so that I can pass it along to my friend.
It's a little out of the way but Deer Creek Products in Shelbyville/Middletown Indiana is a one stop shop for all black powder needs. They're one of the only black powder importers left in the U.S. and they have an enormous selection black powder guns, parts and accoutrements. The counter area is very small, you have to ask for what you need, or pick it out of the catalogue.
Don't be off put by the appearance of the building, just walk right in during business hours, there's no sign.