Zeroing:
Mounting as normal- 18 in-lbs on ring caps, 65 in-lbs of base.
Zeroing showed an issue. Boresighted, fired one round (high left of center dot)-
Adjusted down .7 and right .4 mil. Then went to left dot and shot two rounds (top right)
It under adjusted elevation by about .3 mil, and over adjusted windage by .3-.4 mil. Adjust down .3 and left .3 and shot the remaining 7 in the dot.
Adjusted down .1 and went to the drop eval.
Drop Evaluation RTZ and “Tracking”
For an explanation see-
Scope Field Eval Explanation and Standards
The “test” consists of three 18” drops on a mat- one left/right/top with a shot to check zero after each drop. Then the exact same thing repeated from 36”. Then three drops on all three sides for nine drops on the last part- 15 drops total. This is not “abuse”. The 18” drops are a joke really. The 36” start showing something. And when a scope make/model consistently goes through the whole thing without losing zero, failures in actual use are almost unheard of.
This one was conducted on soft unpacked snow and a 1/2” padded mat on top of a 1/8 foam mat.
The shots are marked. The 18” drops did not produce a noticeable shift, however the 36” drops all showed a significant shit, and the 3x3 36” drops caused a severe shift.
Used the reticle to measure the shift for the last shot, adjusted down 1.0 mil, and right 3.5, and shot on the zeroing target, bottom dot-
Low right hit in other target. Recoil or the adjusting reset the erector. Read it, and adjusted. Next 7 rounds are in the dot.
Cont….
Results-
Zeroing showed an issue, drop eval was a fail. 36” drops were a total failure. It is rezeroed, and will sit in the back seat and checked periodically.
Cont…