timelinex, but the .300 Win Mags outshot the .338's for overall accuracy and first shot placement at 1500 yards in the Army's tests. I know that 1500 yard's not a mile, I've measured targets that far away to 1/2 inch accuracy. 1760 yard's a mile, a statute one. Nautical miles are 2025 yards. And it's not unusual that larger cartridges might be better beyond that, but the .300's beat the .338's at 1500 yards.
Period.
Period.