I have a Ruger 10/22 that I got about 20 years ago as a teen. I didn't take the best care of it, and it has not been used much at all up until the last year, when I realized what a gem I had and decided to make use of it again. The factory rear sight had busted, and the factory replacement just didn't seem solid to me. So I had a gunsmith that was recommended to me put on some fiber optic sights and do a real thorough check up and cleaning of the gun. He said it's in good shape and I'll never wear it out.
Took the gun out this morning to sight it in, and was shooting decent groups (maybe 2 inch groups) off a rest at 25 yards. I know that's not outstanding work, but didn't really notice much "bias" in the windage of my groups. The were generally centered slightly below bullseye. When I moved back to 50 yards, noticed a definite tendancy of shots to be right of center - like 4 inches right, 75% of the time. There was a bit of a cross breeze, - can a .22 bullet be affected by 10 mph winds that much at 50 yards? I'm wondering if I need to adjust the windage of my sights. I know the inconsistency is all me, and it's certainly possible that I'm jerking a bit during trigger pull, causing my 50 yd shots to flight right. But I didn't seem to have this problem at 25 yards. I'm shooting Federal bulk ammo (36 gains, copper-plated HPs, 5.6" drop at 100 yds).