IMO, I think the term "cull buck" is crap and nothing more than execuse to shoot a young (small) buck. Let's say a guy shoot a 2 1/2 year 7 point and says that the deer would never of been more than a 7 pointer. Well that may be true, but he will had lenght and mass, so his score will increase. Then you have people who "cull" deer in an attempt to keep only the "good" genes. I don't know about everyone else, but I think you would have shoot a whole bunch of deer to really effect the gene pool of the heard. So again, I think it is pretty much a crap term.