What I would do is pull it all off looking for a problem. If I found a mount or ring I could identify as the culprit and was moving I would fix that. If not I would install a scope I know groups good. Kinda a pain if you have to pull a scope off another rifle, but cheaper than components.
I had 3 do this to me before I left the Leupold user club. Two in one season, all on Weatherby rifles. Sent the scopes in and they gladly repaired them. I then sold them all.
Rifle is a 7STW, Rem factory action/barrel in a Greybull stock. PRW rings torqued to 28#. I bedded the rifle myself, recoil lug taped only on the btm, fits snug and action torqued to 60#.
I will remount everything and check again. I have another scope but it's a $60 Bushnell.
I have those kind of scopes to very good,,, for pounding in tent stakes.
usually, but if he wants a nice round cut over his eye he could give it a whirl.
as far as the groups, they have the look of the rifle rolling in the bags (letting the rifle twist) once in a while to me. Are you letting the bbl. cool down as you shoot?? Rem factory pipes can sometimes get funky when they warm up.
my list for this would be
1, bad load
2. twisting in bags occasionally-- shooting form
3. scope- rings, etc.
5. funky factory bbl.
here's a test I often do to isolate the problem. I use one case, and will file a notch on the rim to aid in indexing it. I then shoot one round, and then reload with the same exact load again for four more times. If I still get fliers, I start to look at the platform instead of the loads. It's also very important to have the rifle exactly in the same position. If your shooting off a windage plate, then sprinkle a little talcum powders on the front bag. I fixed the flier isssue a couple times with that alone.
Looks like paralex issue to me. Could be just you too. I think if it was loose mounts or rings you would have more flyers and less consistent grouping. as a general rule I spend the same on a scope as I do on a gun. If you think about it you gun is only as good as its sights/scope. Fwi a gun/ scope is only as good as its user.