ORIGINAL: stubblejumper
Since BOTH rounds will require you to hold above the desired POI at that range, neither is better
So using that logic the 300ultramag is no better than a 30-30 for 1000 yard target shooting.
I suspect there's a helluva lot more difference between the two you mentioned, and the two comparisons I made. Perhaps the LOGIC is the same, but your example is pretty extreme....[&:]