Bought a Weatherby Accumark in .338-378, also a Night Force scope. The store where I bought the gun mounted the scope using Leopould bases and rings. This setup only lasted for seven shots, on the eighth shot the scope came off. Sheared the screws off on the front base. The rear ring ripped the lug off that holds it to the base. Now I'm stuck with no gun for the next two weeks till the gunsmith can drill and tap the holes, and replace everything with heavier equipment. OH well, I need to work on my .338 Win Mag any way.