Gent I shoot with about every Sunday has a 4.5-14 Fullfield II Burris. He'd put this scope on its 3rd rifle and spent many a Sunday shooting with the rifle, seeking the best load for the rifle. He never achieved the kind of groups he'd expected with the rifle. One day we discussed his accuracy problem and I suggested it may be the scope, but due to its performing flawlessly on the previous 2 rifles, he didn't think the scope was the problem. Well the scope was the problem and about 2 weeks ago, sent it in to Burris for warrenty repair. Yesterday, he was at range with a new replacement scope sent back by Burris. The problem with windage or elevation adjustment beyond worth fixing, so they sent a new scope.