The choice of an auto vs a non auto is a very personal one, but don't expect that to reduce the problem. I "Note" the inertia weight on an "Infallible" SST of mine, which is designed to elimanate the involuntary pull by sliding over the trigger blades during recoil, slides "FORWARD" not to the rear. Recoil drives the gun rearward, loose parts with mass thus shift forward in their relative positions in the gun, not rearward (the gun actually moves, the inertia of the parts make them try to remain stationary). Removing mass from the safety is not going to prevent it moving rearward to the safe position (the recoil movement of the gun is much more forceful than the return). I strongly suspect you are holding the gun in such a manner that after the recoil your thumb is dragging it back, as your hand slides back to position.
