Aside from the size of the grip I have to ask why you're set on the GP100? I owned both a GP100 with Hogue grip and a S&W 686 with Hogue grip. Much, much preferred the S&W, sold the GP100. Something about the angle and the geometry of the hammer just made the GP100 hard to #### for SA and the recoil was harder to manage. Even though the GP had a fiber optic front sight and I really wanted to like it just couldn't. I know of course that's just personal preference and there are as many fans of the Ruger as there are for the S&W. Just posting my experience with the two of them.
Did you ever try another grip on your GP? I find the Hogue grip for the GP has way to much material at the back of the frame whereas the Smith is exposed along the backstrap of the frame making for a much better fit in my hand. The original GP grip (like the Altamonts in the pic above) with the wood panels or another brand like Uncle Mikes are much better fit for me.



















































