Hi-cap frame with factory grips: 1.466" in the middle, 1.461 at the top and 1.479 at the bottom
Colt with Houge wrap around rubber grips: 1.317 middle, 1.264 top & 1.323 bottom.
Hi-cap frame with no grips; 1.015 top, 1.010 middle & 1.009 bottom.
Depth of grip with no grips installed (front to back, including mainspring housing):2.230 bottom, 2.041 middle (just below start of grip saftey) & 1.980 just under trigger guard including but not depressing grip saftey.
Colt frame with no grips; .757 top, .762 middle & .753 bottom.
Depth of grip with no grips installed (front to back, including mainspring housing):2.136 bottom, 1.984 middle (just below start of grip saftey) & 1.994 just under trigger guard including but not depressing grip saftey.
Unfortunaly my earlier referance to a Sig 226 was with a friends firearm so I don't have immediate access to it. I could get those #'s on Sunday (that is when I plan to see him next).
Hope this helps.
Cheers!