A shooter to me is a buck that will gross 140" or better. Now I do not completely limit myself to this criteria but it's a guideline that I use to assist in making the final decision. I may stray some on this guideline if there was something unique about a rack of a mature deer that I knew was old and big but really wouldn't score well per the scoring method. To me it is more about age class. Anyone who has spent time pursuing whitetails should be able to determine inmature deer from mature deer. I think one thing that hurts some folks who are trying to take mature deer but fall short is an inability to field judge. Many hunters immediately look a a deers antler spread as if it is some indicator of maturity. Sure I like a wide spread but this is a poor indicator of size and maturity when used by itself. The tell tale sign for me is body size and shape, then antler mass, main beam length, number of typical points, and then finally width. I have taken and seen many tight racked bucks break the 140" mark. 2 years ago I had a good friend call me a tell me that he took a buck that he felt would score in the high 130's. When I arrived to celebrate with him, at the first look at the rack from 30 yds away I told him, "130 my butt, that deer will break 150"! He then said "No way, he only has a 16.5" inside spread." Well the tape didn't lie, the buck grossed 158 and some change. He got lucky in his assessment because he never saw the deer from a frontal view before he let the rifle bark. Good thing cause he may have passed on a fine deer. On the flip side, if the deer would have been a 20" spread 3.5 that grossed 125 he may have been a bit dissapointed. Mind you this guy had taken a 173" buck the year before.
The areas I hunt are mostly private land, semi managed, by this I mean we practice doe harvest and shoot only mature bucks, however we basically utilize existing agricuture crops and do not plant food specifically for deer. The lands are in the South East, mainly North Central, KY.
If I may I'd like to add that there have been and there will be years that I will spend both my antler/antlerless and antlerless tags on antlerless deer, if I am not successful in harvesting a mature buck by seasons end. I am not of the mentality of shooting lesser bucks just because I have a tag that would allow me to do so. That wouldn't help my deer herd, my neighbors, and it would make me a hypocrit. I have no quams with hunters shooting mature deer that do not have genetics for large racks. You have to consider all aspects of the animals you hunt. Not every place has large rack potential although in this day and age most do more than some may want to believe. Bottom line is you have to shoot the deer that you will be happy with, however if you do not try to focus on the most mature bucks you are crippling your chances of ever having deer with good racks.