My Encore shoots conical lead bullets pretty well. It makes 2.5" groups with the 370 grain Maxi-Ball. It shoots about the same with the Hornady 350 grain FPB bullet: This bullet is lead with a copper coating.
The FPB bullet has a flared skirt. Put the FPB bullet in the Encore QLA and make sure it is straight. Then give the short starter a good whack with the palm of your hand to start it into the rifling.
Good luck with your muzzleloader experience.
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