This is just a guess because you give few details but as it is I am thinking a loose base or loose mounts. Or a bad scope.Shoot 10 rounds a minute apart. That will tell the story. If you get 2 groups either the scope is bad or something is loose. Also take the action out of the stock. If you see a shiny spot the barrel is bearing on the stock.I get these groups with a bit of regularity. The pairs won't necessarily always be in that same spacial orientation. Can anyone tell me what is most likely to be causing it?
I don't know anyone that shoots, so I think I'd either be looking at doing a warranty claim on mine with vortex, or selling it and getting a different brand.I'd beg, borrow or steal a different scope to try. If the talleys are tight, they should be fine.
Definitely some improvement but I think the load is still out of tune a bit. Next trip, I'd load 5 rounds exactly the same for comparison, 5 rounds .005 longer and 5 rounds .010 longer with out changing anything else.
Clean the barrel with solvent and a brush to get at least most of the copper out before your next trip. Hoppe's will take the copper out but it takes some soak time. If you have a more aggressive copper solvent, that would speed things up a bit. Then once you have the copper out, put a thin coat of thin oil in the bore. Load a couple of extra rounds to fire first as foulers, then shoot your groups.
Nightforce has great tracking capabilities, they are rugged, a bunch of elevation, holds zero forever, and reticles are designed for long range shooting. So if you are looking to shoot long distances constantly, then you need a scope that can take the abuse. -- gilmillan1
Nightforce is such a solid combo of reticle, available elevation, glass that is good enough to shoot at the longest range you can dial. Nightforce has bullet proof construction that can handle the incidental horse rolling or some other rodeo action. -- bigngreen
The total package. Nightforce is the best I have used as far as turret feel and solid detents. I have never had one that didn't track right on and always return to zero. Nightforce NXS is the best value for everything I need. -- Broz