I'm currently working on a couple of Boyds classics.
They're pretty meaty around the grip so I sculpt them with a dremel to a smaller thinner wrist and I also drill two 1 inch holes into the butt around 3 inches deep. I could run them a bit deeper but the 'fear factor' normally gets the better of me. smile

The current classics have finger grooves running up the forend and a lot of material has been routed out of the forend as well so there's not a lot you can do to take any weight out of there.

I've just put one of my modified stocks on a set of scales and it's coming in at 30ozs neat.