I read a long term studyawhile back and they reported 1-2 is average while none of the studied bucks bred more than four. Even the little guys usually bread at least one. I'm sure there would be some variation to this based on the buck-to-doe ratio. If it is 1:1 or 1:2, this data would make sense, but if it is in a heavy hunting pressure area with an out of whack ratio like 1:6, then you'd expect the bucks to be breeding more does.