What size loads for my muzzle loader?

[wiperhunter2]

I picked up a used 45 cal. White and I'm not sure what load to use. I've been using 90 grain of Pyroddex P, with 460 grain "No Excuses" bullets. I'm doing OK at 50 yds with open sites but at 100 yds, I'm all over the place. I'm thinking about getting a red dot scope for the longer shots over 50 yds because I have a 1 power scope on my CVA muzzle loader and hate it. From what I've seen, a 1 power has less power than my regular vision, where as red dot just uses glass to project the dot or cross hairs on the lens. What do you guys think about the scope idea and the loads I'm using? WH2
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