I'd say it's at the minimum of acceptability, but it is acceptable with 140gr or heavier premium bullets. Essentially the same advice given for the .270. The 160gr Weldcore would be my #1 bullet, but since it's not readily available in factory ammo if you don't reload my #2 choice would be the 140gr A-Frame. It is factory loaded by Swift, and assuming that load shot well in your gun I would use it. The roughly 25% extra weight retention of either of those bullets could make the difference on a big bull vs. say a 140 Accubond.