Handle as many variations as you can, to make sure you find one that fits YOU, then copy the dimensions down, one size does NOT fit all. I spent three years whittling on a beautiful piece of maple until I had carved out a stock with a generous thumbole that fits me like a glove. Inletting it without power tools is why it took so long, I decided to make haste slowly, so I didn't bugger up a sweet piece of wood. But it turned out nicely, when I'm standing with the rifle at my side the muzzle is about two inches off the ground, and with the high comb it lines up perfectly. If I close my eyes and shoulder the gun, I open my eyes and my crosshairs are on the target. Snap-shooting is a breeze, and no squirrel is safe out to about 60 yards. If I ever buy another bolt action gun, I'll probably do it again! Hmmmm, maybe I need a 7-08 in a Remington action............. :grin:
PJ