I made it out to CRC (Colorado Rifle Club) today to test out my new Creedmoor, shoot my SAS Arbiter suppressor for the first time, and get some speeds on Hornady factory 140 Amax. Before I get around to putting up the target photos etc. I wanted to quickly lay out the results.
Rifle didn't group very well off the batt. Cold bore was 0.5 high and right, so I adjusted and it was 0.5 low and left?!? Seemed to be bracketing the bullseye. I ran a few patches through it and then it grouped fine. Go figure. Now it was time to attach the suppressor. POI was 0.2 mils low, no change in L or R. VERY repeatable. Groups tightened up as well.
I did all this testing on the 100 yd Schutzen Range. We then moved to the high-power range and shot at 600 yards. Wind was shifting 10 - 12 mph from 180 to 90 degrees (S - E) or from my back to from the right to left. Temp was mid to upper 80's, bright sun.
I was dialing between 3.2 and 3.7 mils and 0.3 - 0.7 mil wind. I was worried about the elevation changing so much and was concentrating on my position and fundamentals etc. So then I broke out the chrony. I was getting between 3,012 and 3,086 fps! That's an ES of 74 fps. I think my ammo got hot. Does that sound right for such a high MV and larger ES?
*Edit to add a few photos.
All three are 5-shot groups at 100 yards. Group one sucked...well, so did group 2 IMO. Was 0.2 mil down and 0.2 L on group one. Zeroed/adjusted for group 2. Suppressor shifted POI down 0.2 mil.
600 yard line with Chrony. Is it too far away?
Shutzen Range (100Yd)
Rifle didn't group very well off the batt. Cold bore was 0.5 high and right, so I adjusted and it was 0.5 low and left?!? Seemed to be bracketing the bullseye. I ran a few patches through it and then it grouped fine. Go figure. Now it was time to attach the suppressor. POI was 0.2 mils low, no change in L or R. VERY repeatable. Groups tightened up as well.
I did all this testing on the 100 yd Schutzen Range. We then moved to the high-power range and shot at 600 yards. Wind was shifting 10 - 12 mph from 180 to 90 degrees (S - E) or from my back to from the right to left. Temp was mid to upper 80's, bright sun.
I was dialing between 3.2 and 3.7 mils and 0.3 - 0.7 mil wind. I was worried about the elevation changing so much and was concentrating on my position and fundamentals etc. So then I broke out the chrony. I was getting between 3,012 and 3,086 fps! That's an ES of 74 fps. I think my ammo got hot. Does that sound right for such a high MV and larger ES?
*Edit to add a few photos.
All three are 5-shot groups at 100 yards. Group one sucked...well, so did group 2 IMO. Was 0.2 mil down and 0.2 L on group one. Zeroed/adjusted for group 2. Suppressor shifted POI down 0.2 mil.
600 yard line with Chrony. Is it too far away?
Shutzen Range (100Yd)
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