We know from experience, not testing, that the forearm and lower rib get ripped off of Winchester Model 21's with beavertail type forearms. That seems to be the only weak link in the Winchester Model 21. Shooters that hold on tight to the beavertail forearms of Win Mdl 21's take up a great deal of the recoil by way of the forearm and that force is taken by the forearm lug which is part of the lower rib. After a few thousand shots fired the lower rib gets loose. The first clue that the shooter has that something is wrong is when the forend begins to rattle. Most all of our SXS's have a weakness somewhere or other, the lower rib lug is the Win Mdl 21's weakness. Good Shooting To You, Jent
