Frank, if you intend to commercially load ammo, cost is a major factor. You'll want to be loading military powder that you can buy in bulk-it's far cheaper. I'd suggest the following:
I get quite a lot from Hi tech and they have been more than reasonable with getting me product even when they don't have it. They can furnish you with loading data for the powders you won't recognize. Barlett(gibrass) is another dependable supplier and will furnish data at your request. Obviously, the more you buy, the better the deal. Do not accept the internet pricing if buying in bulk. Call for pricing. And yes, pricing is always subject to customer attitude.