Those leather slip on pads are great to make a stock longer. Cut some leather shims to put inside to make one even longer. And for the drop in those old stocks - just learn to shoot them with your head up, not down and out like a turtle.
With light loads you won't feel the recoil anyways. Charlie, was your data useing paper wads ? They usually have less pressure than useing plastic. Just from feel - the same load useing plastic wads kick alot more then when useing paper wads. Paul