The grips do sound like part of the problem, skinny grip gives you less control generally, now you might call a Hogue a skinny grip, but in reality is hand filling. Not saying you did this, but rule #1 of shooting hard recoiling hand guns, don't fight it, do not put a death grip on the grip and tense every muscle in your fore arms, with your arms stiff, the gun will win every time, grip the grip frame as hard as you would a hammer your about to drive a nail with, slightly bend the arms, relax, press the shot, the gun is going to recoil but up, not into your body, there is a time to bear down, and that is when you are being attacked, by some type of predator, then hunker down and take it, at that point you won't notice. I one handed a coyote out of my hunting blind with 300 grn XTP, because it was the most comfortable shot at the time, center punch through the chest. It was hunting the 2 puppies that had followed me to the blind who were curled up asleep at the foot to the tree.