After filing the front sight blade and slight adjustment to the rear, my recently aquired mountain rifle is zeroed at 75yds and ready for ohio gun season monday morning. The load is 100gr American Pioneer Powder and a Hornady Great Plains hphb bullet. Also, the nipple was changed to a musket type for more fire. A group size of under 2" was achieved, and I never cleaned once between shots. It would be safe to say that this powder got along well with the lube on these bullets. Will be back later after I see how she performs afield.