I know there are outfitters who do not allow it, and there use to betwo or threestatesthat did not allow it (still do?) about 20 years ago. About 10 or 15 years ago, there were some additional states looking at not having the 243 as an approved caliber. I use a 30-06 so I never paid attention to how this turned out. You really have to be careful with your bullet selection and shot placement with a 243 as there is little margin for error. Yes, the 243bullets have improved, but IMOthere are still bettercalibers than the 243 for deer that have low or moderate recoil. Don't ignore the 308 or 30-30, but I don't suggest a 25-06.