I finally got my .36 mountain rifle sighted in. H&H Barrel Works barrel. I'm still having sparking issues with this ancient Dixie lock though. The first 4 shot low and I must have filed 1/8" off of the brass front blade. I did one horizontal sight correction and the last 4 are in the middle of the black. This is 50 yards, 35 gr. FFFg Goex, pillow ticking patch, .350 ball. This is the rifle I reshaped the lock area and last month.