Depends on how much you want to spend, if you collect the Double Gun Journal take a look at some of the articles about the Italian firearms engravers like Giancarlo and Stefano Pedretti. I've seen scrimshaw and engraving combos come from some of these Italian makers that will get the heart beating, these are firearms artists that know how to execute the femine form. Aside from that take a look at some of the knife magazines, these are great exhibits for the kind of scrimshaw you looking for and they give lots of names and addresses for your information. Knife makers are more inclined to use scrimshaw than gun stockers and they'll probably be happy to work on pistol grips.