packgoatguy
WKR
I've got a tikka stainless superlite 6.5 creedmoor in an MDT lss chassis, with side port muzzle break. Swfa 10x42 MOA in DNZ 1 piece game reaper rings. All screws and rings and the threads cleaned and decreased before mounting. Scope was leveled, blue locktight on threads, and all screws have a dab of fingernail polish after install to indicate whether any of them move.
There is no indication that any ring or base screws have moved (fingernail polish still intact). Action screws are all tight. Muzzle break is on tight. Turret screws all tight.
This setup has been a reliable half moa shooter with factory Hornady 143gr eldx. Avg 2650fps. Dopes verified out to 600 yards. Shooting prone, with front bipod, rear rest under the stock.
Now... here is my problem...
Out of the blue, the last 10 rounds have been going further and further to the right. 10 shots ago, my last group at 400 yards was 1.75 inches wide, dead center. The next two shots (a different day, cold barrel each shot) were 4 inches to the right. The next shot was 5 inches right, the next was 6 inches right. The next two shots didn't even hit the target, so I moved into 200 yards. Elevation is spot on, but last shot was 5.5 inches right at 200 yards. There was a bit of wind left to right, so even accounting for an inch or two of drift, it is still way to the right.
I only dial for Elevation, so the windage turret doesn't even get used... what am I missing here? This is supposed to be my ultra-reliable rifle for a deer hunt I'm taking a half dozen youth hunters on next week. I've had about 100 rounds through it in its current configuration. Haven't cleaned the bore, but seeing no pressure signs on the brass.
I would normally just figure a zero shift... and reset the windage 7 or 8 clicks to the left.... but it seems to be getting progressively worse. What could be causing this?
There is no indication that any ring or base screws have moved (fingernail polish still intact). Action screws are all tight. Muzzle break is on tight. Turret screws all tight.
This setup has been a reliable half moa shooter with factory Hornady 143gr eldx. Avg 2650fps. Dopes verified out to 600 yards. Shooting prone, with front bipod, rear rest under the stock.
Now... here is my problem...
Out of the blue, the last 10 rounds have been going further and further to the right. 10 shots ago, my last group at 400 yards was 1.75 inches wide, dead center. The next two shots (a different day, cold barrel each shot) were 4 inches to the right. The next shot was 5 inches right, the next was 6 inches right. The next two shots didn't even hit the target, so I moved into 200 yards. Elevation is spot on, but last shot was 5.5 inches right at 200 yards. There was a bit of wind left to right, so even accounting for an inch or two of drift, it is still way to the right.
I only dial for Elevation, so the windage turret doesn't even get used... what am I missing here? This is supposed to be my ultra-reliable rifle for a deer hunt I'm taking a half dozen youth hunters on next week. I've had about 100 rounds through it in its current configuration. Haven't cleaned the bore, but seeing no pressure signs on the brass.
I would normally just figure a zero shift... and reset the windage 7 or 8 clicks to the left.... but it seems to be getting progressively worse. What could be causing this?
but several of these kids also have cow elk tags this next couple months. At least our prep and shooting practice this year didn't go unheeded... all but one of the deer were one shot kills. Considering all but one of the shooters were 13 or younger, and only one had previously harvested big game... thats not too bad.
