I too find this a bit hard to swallow, while all scope manufacturers can and do have problems with scopes the recoil of a 12 gauge or bumping should not knock the scope off POI. If they did nobody would buy them, as their is nowway to prevent bums and jars a scope takes in any given day or season of hunting. I have had my fall off a tree, truck, ride in a gun boot, etc and never had a scope get knocked out. I would look at the mounts, rings as a problem area if the scope is indeed fine. To ensure no slippage use blue locktite on the screws. If the scope is faulty all shots regardless of the recoil would show some effects, as I have had a scope break and it was easily noticable their was a problem with the scope, as the mounts were tight and not shifting.