I had a leupold mk4 lr/t with m1 turrets. I had it on a rem-700 and never had any issues, (didn't use it much either). But, I traded it to a friend who put it on a scar-17, and all of the sudden, it can't hit jack. The rifle is accurate, sub moa he claims. He hasn't had any issues with the rifle before, but when sighting in the scope, it was all over the place at 100 yards. It has never been dropped, it has been in a case or a safe since the day I bought it. Could something have happened to the scope in swapping? Or could it be a manufacturer defect that went unnoticed with my limited use with it? Will leupold fix it?