First off, I would think that if one fired a gun and the forearm moved "forward a little bit", that it would be that their hand is just sliding forward on the forearm. I would think that in order for one to feel the forearm move, that it would have to move a significant amount, so much so that the forearm would be sloppy all of the time. Or that there would be something drastically/noticibly wrong with the gun. Think about it. So how far would you say that the forearm is moving forward on the gun when you fire it, Max? 1/4, 3/8, 1/2 of an inch? Because anything less than that and I'm going to have to wonder how you could detect that amount of movement during the time of recoil on a shotgun. And that much or any more you should be able to find something wrong with the gun fairly easily. Or the forearm is going to come off of the gun. All this and you can't detect it when it isn't being fired. Things that make you go hmmmmmm...................
