I have No. 1's in 7x57, 30-06, 300 H&H, 9.3x74, 375 H&H and 450-400 NE. The 30-06 and 375 H&H are exceptional (1/2 - 3/4 MOA consistently). The rest are acceptable at 1 - 1.5 MOA. All are factory original with no tinkering. I'm getting to the point in life when it's time to cut back and 'thin the herd', but the 30-06 and 375 H&H will stay to the end.