You have to file down the front sight on the Blue Ridge to sight her in..., and in fact to get the full potential accuracy from it, you will need to swap out the front sight to a thin blade. I prefer thin silver myself. Out beyond 50 yards the factory front sight post will look like you are balancing a quarter on top of a 2x4. The thinner blade will give you more precision.
Next, you need to check your round ball and be sure they are all lead OR switch to a smaller alloy ball, and check your patch thickness and try thinner. You should be able to ram the ball home with short strokes of the ramrod after starting the .530 ball and a .012 patch with the butt of a knife handle, pushing them flush with the muzzle. If you're fighting more than that..., your combination may be tighter than it needs to be. I never needed a short starter.
Finally pay very close attention to the patches, as Pedersoli barrels on those rifles are notorious for cutting patches. The breech is an "improved" breech so you will need to keep it very clean and may need a .22 bore brush if you experience ignition problems.
LD