Miracles are something that happens without human intervention or assistance.Name someone, who actually represents competition today, that pulls off this miracle.
That aside, I may have been off by about 50 percent; I should have said about 700 to 800 rounds and that's more than 500. They're probably hot-rodding loads, too. But names from the high power long range discipline will soon follow as soon as I get confirmation. I got about 640 rounds of no worse than 3/4 MOA accuracy at 1000 (same as the best long range benchrest ones get) out of a .264 Win Mag and that burns a whole lot more powder per shot than a 6.5x284.