There is no set number, although generally it would likely go mid 120’s at least. If I think it’s 3.5 or older, I’m shooting. My “unscientific” criteria is if I look at the buck and think “shooter” then it is. Plain & simple. Where & how I am hunting can change the criteria at any time. If I head out this late season with my longbow and see any decent 8 pt, he’s likely to get an arrow sent his direction.