I queried over that same question for many months for several different buttstocks. The simplest answer was proffered by my gunsmith, who'll install a recoil pad for $60.00. Either Limbsaver, or Pachmayr Decelerator, whichever he can get cheaper. He grinds them to fit, cuts the length of pull to the length you specify, and when he's through, it looks like the pad grew on the gun. He's done a half-dozen for me over the past several years.