Yep...Buffalo Arms is the place to start. They have pretty much EVERYTHING in the way of BPCR equipment/books etc. They are very fast and reasonable.
If you call them, you may get to talk to Dave Gullo. Ask him anything you want to know. MT Chambers for cast bullets, and there is an outfit Senlac, Sask., but I can't recall the name. They sell Ben's bullets as well as powder and other BP related stuff. They will be busy w/seeding and gun shows right now. If I can find the name and #, I will post it.
If you have reloading press, etc., get dies etc. If not, and you don't plan on reloading for anything else, I would go with the Lee Handloader Kit. Cheap and easy, easy to learn, and a good place to learn reloading. Quite a few BPCRS shooters are starting to use Wilson/Sinclar Hand Die Reloading Kits. (sinclairintl.com) I am actually considering one of these. I think you can control your powder compression, seating depth, and neck tension better with this setup. With this kit you use an arbor press instead of a hammer, as in the Lee Kit.
And you are NOT driving us crazy.....it feels good to be able to help new people to our sport. NEVER be scared to ask-if we don't know-we will find out, or point you in the right direction.
Good Luck,
LeRoy