300 yards ... 15 shot group in 0.814 MOA ... a true 1/4 MOA rifle and load perhaps?
This post isn't an attempt to show off but rather an effort to show what can almost happen when everything comes together during a match. I'd also like to start a discussion on what it means to have a TRUE 1/4 or 1/2 MOA rifle and load. I scored a personal best yesterday at 300 yards with 15 shots in 15 minutes plus two sighters. My rifle is zeroed for 200 yards so I dialed in +0.7 mils of elevation and -0.3 mils of windage and held on center. The first sighter S1 just clipped the X-ring. I made no adjustment for the second sighter, held on center and a wind gust pushed the bullet to the right. Luckily, I realized that the wind had picked up so I made no adjustments for the next 15 rounds but held off to the left slightly and tried to time my shots with the wind. My score was 149-4X with one 9 which was the 14th shot! The scorer told me that the wind suddenly dropped right as I pulled the trigger ... :banghead: I shoot F-TR which means a bipod and some form of rear bag. The conditions were tough with the sun right in our faces and wind gusting from 5mph to 12mph. The wind proved to be a bigger problem at the 500 and 600 yard lines where we had 15mph to 20mph gusts. My overall score was 435-8X (master).
So why do I say a "true" 1/4 MOA rifle and load. Well, I don't believe that you can shoot a 15-shot 1/2 MOA group with a 1/2 MOA rifle and load. Statistically it just isn't going to happen. If you have everything optimized, the vertical deviation is a true indication of your system because wind will mostly affect the bullet left to right rather than up and down. The 15-shot group for score shown below has a vertical deviation of 0.548 MOA. Both sighters (S1 and S2) are inside that vertical spread. Given aiming error and variations in each round, the rifle would have to be capable of considerably better than 1/2 MOA, something more like 1/4 MOA.
Needless to say, I'm very pleased with the target below and doubt that I'll repeat that performance anytime soon.
Here's my string for the 300 yard stage.
S1: X
S2: 9
#1: 10
#2: 10
#3: 10
#4: 10
#5: 10
#6: X
#7: X
#8: 10
#9: X
#10: X
#11: 10
#12: 10
#13: 10
#14: 9
#15: 10
This post isn't an attempt to show off but rather an effort to show what can almost happen when everything comes together during a match. I'd also like to start a discussion on what it means to have a TRUE 1/4 or 1/2 MOA rifle and load. I scored a personal best yesterday at 300 yards with 15 shots in 15 minutes plus two sighters. My rifle is zeroed for 200 yards so I dialed in +0.7 mils of elevation and -0.3 mils of windage and held on center. The first sighter S1 just clipped the X-ring. I made no adjustment for the second sighter, held on center and a wind gust pushed the bullet to the right. Luckily, I realized that the wind had picked up so I made no adjustments for the next 15 rounds but held off to the left slightly and tried to time my shots with the wind. My score was 149-4X with one 9 which was the 14th shot! The scorer told me that the wind suddenly dropped right as I pulled the trigger ... :banghead: I shoot F-TR which means a bipod and some form of rear bag. The conditions were tough with the sun right in our faces and wind gusting from 5mph to 12mph. The wind proved to be a bigger problem at the 500 and 600 yard lines where we had 15mph to 20mph gusts. My overall score was 435-8X (master).
So why do I say a "true" 1/4 MOA rifle and load. Well, I don't believe that you can shoot a 15-shot 1/2 MOA group with a 1/2 MOA rifle and load. Statistically it just isn't going to happen. If you have everything optimized, the vertical deviation is a true indication of your system because wind will mostly affect the bullet left to right rather than up and down. The 15-shot group for score shown below has a vertical deviation of 0.548 MOA. Both sighters (S1 and S2) are inside that vertical spread. Given aiming error and variations in each round, the rifle would have to be capable of considerably better than 1/2 MOA, something more like 1/4 MOA.
Needless to say, I'm very pleased with the target below and doubt that I'll repeat that performance anytime soon.
Here's my string for the 300 yard stage.
S1: X
S2: 9
#1: 10
#2: 10
#3: 10
#4: 10
#5: 10
#6: X
#7: X
#8: 10
#9: X
#10: X
#11: 10
#12: 10
#13: 10
#14: 9
#15: 10
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