This question is for all the range rats out there. I was at the range last night tweaking my hunting load. The first 5 rounds were a couple inches high and inch and a half left of the bull. The group itself was good (by my standards). I adjusted the scope down 6 clicks. The next 5 rounds grouped well but were a inch high and about inch and a half to the right.

The only adjustment to the scope was high/low. Why would this make a difference in the grouping from left to right? By the way, the distance was 100 yards and the load was 245g, 100g 777 pellets and 777 primer.