If you have been following along in the comments at Say Uncle you will know that my assumptions about the cartridge used in my simulation here were off a bit. I assumed a 300 grain bullet with a BC of 0.785 and a MV of 2750 fps. According to Mu the correct bullet is a 250 grain leaving the muzzle at 3070 fps with (according to SteveA) a BC of 0.587. This changes things some.
The sight angle for no hold-over is 127.8 MOA instead of 122 MOA.
The time of flight is 5.2 S instead of 4.9 S.
The velocity of the bullet at the target is about 924 fps instead of 1043 fps. This results in PF of 231 instead of 313.
The number three shot groups required to get one that was less than or equal to 1 MOA is, on the average, 4.3 instead of 4.9 (initally my program showed 83 but now it shows 4.9, I suspect some sort a caching error in Modern Ballistics). But those numbers are identical given the margins of error used in the assumptions that generated them.
Both Modern Ballistics data files for the simulations are here.
See also the comments at Tam’s.