Someone at my friend's lease had one mounted on a .243. I can't speak for personal experience, but his rifle couldn't group consistently, and the groups moved around. It wasn't the gun, at least from what I could see, and it wasn't the mounts. I really think it was the scope. I know that he said that he tried to adjust it, but the tracking was just awfull. Again, maybe it was just that one scope, but then again, this is a low-level scope. For your .22 it may not be a big deal, but, then again, you're better of spending a little bit more money and getting a better scope, in my personal opinion.
Zachary