My last 2 NRA F-class targets, above, were shot at 300 yards (MR-63FC). (Conditions were 8-14mph gusting wind from 4-5 o'clock, late evening, sunset behind me, with some mirage from the ground)
Those were shot prone.
For scale, the X ring is
X ring .......1.42
10 ring ......2.85
9 ring .......5.85
8 ring .......8.85
7 ring .......11.85
6 ring .......17.85
To get a "perfect" score of 200, you have to shoot sub MOA. 1 MOA at 300 yards is 3.141". So you need a rig that can shoot a
20 shot group of .907 MOA.
Shooting a 20 shot group that is sub MOA is far more difficult than shooting a 3 or 5 shot group that is sub MOA.
I've shot 5 shot groups with that rifle from the bench, with that load, at 100 yards which were .220 MOA during load development and confirmation. But shooting a 20 shot string, over (up to) 20 minutes, prone, introduces a whole new host of variables.
Fatigue in body.
Barrel heat & mirage.
Changes to wind / weather.
Changing light conditions (esp. if it's partly cloudy).
You've got to do everything exactly perfect every single time. Cheek weld must be consistent. Parallax on scope must be precisely set. Bipod must be stable. Body position must be perfect and relaxed (otherwise *something* will start shaking, at some point.. neck, arms, back, etc). Then you have to wait for the right wind.. and do everything right on the shot itself. Breathing, paying attention to heartbeat rhythm, trigger pull, follow through... it's all got to be perfect. Every single shot. For 20 shots in a row.
Not easy to do.
I've been chasing a perfect score for the last year and a half now, and although I'm consistently in the high 190's, I still can't get that perfect string.