Today I shot my AAC 16 inch AR upper at 600 yards. It was only the second time I have ever fired over 200 yards, so I was concerned about my own ability being reflected in the results.
Conditions were 48 degrees F, 100% humidity, 30.02 pressure, 200 foot ceiling (fog), calm on wind.
The range in Reading MA has 600 yard practice Tuesday mornings. Ralph Tufano was there running the event and let me shoot. I could tell there was some concern about if I was sighted it well enough to hit the target, but I had a 200 yard zero so I thought I could with 25 MOA more elevation. I used a Leupold Mark 4 6.5–20×50mm ER/T M5 Front Focal variable power telescopic sight with a 34 mm tube diameter and first focal plane Horus Vision reticle in a one-piece mount.
There were people pulling targets, and Ralph spotted for me and let me shoot on his target alternating with him. My first shot was using 25 MOA elevation beyond my 200 yard zero. It was low - between the target and the ground. For my second shot I did 30 MOA elevation, and it was a hit - but low, and around the 6-ring. We asked the target-changer if the hole was round, and he said it was.
My 3rd shot I did 35 MOA elevation, and it was a hit - I forget where - and they cover the hole with a patch each time. My 4th shot was at 37 MOA elevation and in the 10 ring (the 10 ring is 6 inches in diameter - 1 MOA). My 7th shot was in the 1/2 MOA X-ring. By now there was no longer a concern the rifle/ammo could reach the targets and make good hits. I fired 20 shots total, with a few more 10-ring hits.
Assuming the shots were at 2250 fps, the 200-600 yard change with 37 MOA difference implies a real-world G1 BC of about 0.215 PSI.
Conditions were 48 degrees F, 100% humidity, 30.02 pressure, 200 foot ceiling (fog), calm on wind.
The range in Reading MA has 600 yard practice Tuesday mornings. Ralph Tufano was there running the event and let me shoot. I could tell there was some concern about if I was sighted it well enough to hit the target, but I had a 200 yard zero so I thought I could with 25 MOA more elevation. I used a Leupold Mark 4 6.5–20×50mm ER/T M5 Front Focal variable power telescopic sight with a 34 mm tube diameter and first focal plane Horus Vision reticle in a one-piece mount.
There were people pulling targets, and Ralph spotted for me and let me shoot on his target alternating with him. My first shot was using 25 MOA elevation beyond my 200 yard zero. It was low - between the target and the ground. For my second shot I did 30 MOA elevation, and it was a hit - but low, and around the 6-ring. We asked the target-changer if the hole was round, and he said it was.
My 3rd shot I did 35 MOA elevation, and it was a hit - I forget where - and they cover the hole with a patch each time. My 4th shot was at 37 MOA elevation and in the 10 ring (the 10 ring is 6 inches in diameter - 1 MOA). My 7th shot was in the 1/2 MOA X-ring. By now there was no longer a concern the rifle/ammo could reach the targets and make good hits. I fired 20 shots total, with a few more 10-ring hits.
Assuming the shots were at 2250 fps, the 200-600 yard change with 37 MOA difference implies a real-world G1 BC of about 0.215 PSI.
