You will probably do better with a Remington barrel with the cantilevered scope mount. Part of your problem is likely to be fact that your scope is mounted to the receiver and there is some movement of your barrel between shots. There is a place you can send your gun to have the barrel pinned to the receiver and a couple other modifications, but then it will be a dedicated slug gun. This operation is not exactly cheap. I'd go with the cantilever mount.