Savage found that the recoil of a 12-gauge would dislodge a beavertail forearm even with the F.T. Russell, latch Patent No. 1,029,229. You will find the later 12-gauge Fox-Sterlingworth Skeet & Upland Game Guns with factory beavertails have the Deeley & Edge latch. My 16-gauge Fox-Sterlingworth Deluxe Ejector has a beavertail with the F.T. Russell latch and you can feel it move in recoil.