06-20-2011, 02:56 PM
The differences between the NF and most other scopes is the way they mount their glass, build their turrets, and build their springs. NF uses Titanium leaf springs for the turrets, that are tumble-polished and then compressed for 2 weeks before they are QC'd. If they don't return to spring memory, they don't cut it. It's one of the reasons why NF has the best reliability record so far, especially with heavy-hitting calibers.
44 MOA of usable elevation from a 100 yard zero will give you something like 12.8 Mils, which is probably more than plenty for a Grendel, as 44 MOA of drop will be well after you have gone subsonic. I just ran a 123gr .264" projectile with a .233 G7 form factor in Berger's ballistic program, at 2670 fps with 10mph cross wind full value at 3 o'clock:
Range Velocity Energy Trajectory TOF Drift
(yards) (fps) (ft-lb) (MOA) (sec) (MOA)
0 2670 1947 0.00 0.0000 0.00
100 2476 1675 -0.00 0.1167 -0.73
200 2291 1433 -2.00 0.2426 -1.51
300 2114 1220 -4.77 0.3789 -2.35
400 1944 1032 -8.03 0.5269 -3.26
500 1782 867 -11.74 0.6881 -4.25
600 1626 722 -15.96 0.8643 -5.33
700 1476 595 -20.78 1.0580 -6.52
800 1333 486 -26.30 1.2718 -7.84
900 1199 393 -32.68 1.5091 -9.31
1000 1085 321 -40.11 1.7731 -10.93
To me, the 700yd data on this one is the farthest I would use it at, since that is about 2 Mils of wind drift, but that's just me. I can't get the data to space out on here, so I bolded the range and MOA figures, and italicized the muzzle velocities.
LRRPF52
44 MOA of usable elevation from a 100 yard zero will give you something like 12.8 Mils, which is probably more than plenty for a Grendel, as 44 MOA of drop will be well after you have gone subsonic. I just ran a 123gr .264" projectile with a .233 G7 form factor in Berger's ballistic program, at 2670 fps with 10mph cross wind full value at 3 o'clock:
Range Velocity Energy Trajectory TOF Drift
(yards) (fps) (ft-lb) (MOA) (sec) (MOA)
0 2670 1947 0.00 0.0000 0.00
100 2476 1675 -0.00 0.1167 -0.73
200 2291 1433 -2.00 0.2426 -1.51
300 2114 1220 -4.77 0.3789 -2.35
400 1944 1032 -8.03 0.5269 -3.26
500 1782 867 -11.74 0.6881 -4.25
600 1626 722 -15.96 0.8643 -5.33
700 1476 595 -20.78 1.0580 -6.52
800 1333 486 -26.30 1.2718 -7.84
900 1199 393 -32.68 1.5091 -9.31
1000 1085 321 -40.11 1.7731 -10.93
To me, the 700yd data on this one is the farthest I would use it at, since that is about 2 Mils of wind drift, but that's just me. I can't get the data to space out on here, so I bolded the range and MOA figures, and italicized the muzzle velocities.
LRRPF52