The term "Cull" buck is used too often, as an excuse for shooting a small buck. Sometimes (especially on ranches) the idea of a cull buck is great and used correctly, but a vast majority of the time it's just an excuse.

On the last season of Dream Team, Team Illinios arrowed a buck that they "Didn't want to breed" in their area; AKA a "Cull" buck. And like the Drury's said, the buck was still very young, and just need more than 1 1/2 years... That episode, was a great example of making an excuse to shoot a small buck. And I believe that that same poor decision/explanation, is one of the biggest reasons they didn't win the competition either.

Just my 2 cents...