Afternoon peeps. I not sure this is the right section, so bear with me please.
I have a potential issue with a Vortex Strike Eagle 1-8x FFP, Primary Arms cantilever mount and wondered if any body has any observations or ideas.
Scope is on a .22lr KRISS Vector with a shortened barrel. Barrel has been correctly re-crowned and re-proofed, shooting is from a bipod.
The issue is zero is drifting between sessions.
Everything is torqued correctly, but every new shooting evening I have a large discrepancy in both elevation and windage.
Gun is cased immediately after use, transported approx 20 minutes in the car, then straight back in the safe.
It’s only being shot at 25 and 50 yards, shooting between 50-200 rounds per session.
Mount to rail and scope to mount are correctly torqued, I check every time the rifle comes out. Barrel has been off to be shortened, but is also correctly re-installed by gunsmith, It’s not loose.During every session, once re-zeroed, rifle is spot on, very very tight grouping, no drift
Short mags, nothing being leaned on
Any and all suggestions gratefully received.
ta in advance
John R