NV4x4...I'm not sure how big the western bulls get, but remember, even a 40" bull can look big sometimes. One thing I've noticed over the years is that if the main beams angle upwards at all from the skull to the palms, then the bull you are looking at isn't very old, and probably lacks trophy quality. That's the way it is here in Maine. You want to make sure the palms appear WAY big compared to the animal's head. Looking head on, the eyes are about 10 inches apart; from the side, the palms want to be longer than the nose to ears; from the back, antlers can look wider than they are, so be careful. Palm width and length are more important than spread if you are looking for a B & C head, and the number of tines is what counts. Multiple (palmated) brow tines adds to the length of the palm for scoring. The tines (or antler points) aren't measured, the tines are counted for score. Spread is the number one topic for bulls amongst hunters, but the # of points and the palm dimensions in particular add up faster. Check out a B & C score sheet for moose to get a good idea. Oh ya, be sure to have fun. Guy