I am place Ming a new build and I'm leaning toward a 6mm of some sort. I am thinking 243 AI or 6mm AI. I like the added velocity of the 6mm AI. But the brass offerings of the 243. so I'm asking for opinions on the 2 or even other good short action long range calibers. Its going in a single shot small shank savage action. Its going to be used for deer and antelope. Rocks. Steel p dogs that sort of thing. So please all input wanted.