No distributors for Swiss in PA at all actually. And I didn't think about this until just now and Shyda's is already closed. That's about retarded, closing at 5 on a Saturday? I don't remember them closing that early. Anywho, if you want to try it out, about the best deal online is with Powder Inc at $138.75 for a 5 pounder. Minimum you can order. Free shipping.
https://powderinc.com/product/schuet...-black-powder/ I know a 5 pounder sounds like a lot, but I can guarantee you will love the stuff. And you shoot a good bit so it will go pretty quick. I use the 2F myself but I don't shoot anything bigger than a .50. You may want 3F for your .58's but I'll let someone who knows for sure guide you on that one.