A gunfitter worked with me once and he loosened the butplate screws on an LC Smith with just about 0 pitch and put cardboard shims under the upper part at the heel until it was out about a quarter of an inch, then tightened the screws until snug and had me mount the gun. Big difference in the way the gun felt on my shoulder and the way it lined up the rib on the target. I like negative pitch, it seems. Since then, I've found that on a 1 1/2 by 2 1/2 comb line, I like the angle of the buttplate to be square, i.e. appx. 90 degrees to the comb line. Its fun to play around with different pitch angles using the cardboard shim technique and doesn't hurt or alter anything. Best. Mike P.