hanshi
Cannon
You've been given some good advice, PaulB. In your situation I'd choose either a new muzzleloader from one of the sources mentioned or buy a used one from a trusted individual. The forum is a good place to start if you go used. STAY AWAY from kits (you want to learn a little first), pawn shop gun (same reason) and online deals from people that sound suspicious. Bottom line: get what looks and feel right to you!
As long as the rot isn't faster than 1-48" I wouldn't worry about it. I've had two with that twist and they do fine with prb-and I'd use NOTHING but round ball. You don't have to reduce your powder charge with that twist and .50 is probably ideal in your situation. For deer that's more than enough; I use a .45, myself.
For your first ml you don't want to gamble: finished rifle, new or from reliable source; no kits. Good shooting.
As long as the rot isn't faster than 1-48" I wouldn't worry about it. I've had two with that twist and they do fine with prb-and I'd use NOTHING but round ball. You don't have to reduce your powder charge with that twist and .50 is probably ideal in your situation. For deer that's more than enough; I use a .45, myself.
For your first ml you don't want to gamble: finished rifle, new or from reliable source; no kits. Good shooting.