1. Custom stock, 2. custom made trigger by custom gunsmith (trigger assembly and some metal work) or 3. a. Purchase new or used butt stock, b. use washable paint on trigger hand palm/thumb and grip in shooting stance, c. let dry, then sand out paint marks to desired on PALM/THUMB imprint d. check/sand/check/sand d. refinish with oil rub if wood, spray paint to match if composite. Perhaps 1&2. I've DIY modifed three shotguns for a better/different fit for drop, cast, grip/hand position, and while my body continues to decline (sight, reflexes, balance, strength) my shooting is back to 25 years ago on both clay and wild birds. I had to resolve in my mind that I was not in any "all original shotgun beauty contests" and that the gun was not a "rare orginal aireloom that will apprecizate in value by thousands $$$". It's a tool; then I set to work to make it work for me versus trying to buy the perfect fitting "unaltered all original beauty queen". My 2 cents, spend it how you like.
