I just got back from a long night at the range with my new encore muzzleloader, which I had a guy at the gunstore mount a Leupold scope on, after 16 round of firing and cleaning and couldn't stay on the paper. I realized he had mounted the scope rotated 90 degree to the left so up&down was Left and right. You would think after shooting rifles for 40+ years it wouldn't have taken 16 rounds to figure this out! Rotated the scope and 19 and 20 touched 2" above bullseye, oh well back to Bass-pro for more bullets.