Sounds strange, what are the odds on having the same issue with two different scopes? i’d be questioning if there may be an issue with the gun or mounts. Have you got another scope you could throw on to test? If the third one wanders too then the scope isn’t the issue.
Have you had the action out if the stock? I’d be taking everything apart making sure everythings fit and torqued down as it should be, eliminate that vairiable, then its just a process of elimination from there, have someone else shoot it, use different ammo, have a rock solid setup for zeroing ( rear bag etc )
Groups are great with all ammo I’ve tested except for the Aguila 60gn telegraph poles. Six different brands of ammo, hv, standard velocity and subs
It’s particularly good with the Lapua ammo. It’s their centre point that wanders.
I haven’t had the action out since I floated it and changed the trigger spring just after I got it got.
I originally put the Hawke on it, it had no problems.
One of the first things I did was check all connections were tight.
I’ve been hoping it’s me but if that was the case I would imagine it would have happened with the Hawke, both on the Lithgow and the Howa it usually lives on.
I’ve had a Lithgow for a few years and have now seen and handled lots on the range. They are consistently accurate rifles. First thing, assuming everything is snug and tight is have a decent shooter try it and see if they replicate your results.
From what I’m reading though it sounds like inconsistent technique.
It happens to me, it happens to everyone. Really taking the time the control breathing, position and trigger on every single shot takes discipline. It’s easy to slack off on technique and groups widen accordingly.
Not having a go at your shooting ability but try to remove variables as much as possible and definitely have someone else try the rifle. Those groups look pretty good. Being two separate scopes makes me highly sceptical it’s the rig causing the issue. Unless the weaver mounts on the Lithgow are loose.
They’re just average groups.
When it wanders, the group size does open a little as well, maybe 15-20%.
Perfect day for testing, sunny and no bastard wind so I’ll put up a new target and see what I get today.
Just remembered something as I fired the first group, I have the scope somewhat forward to allow for the Pard007. I just noticed, being hyper aware of all variables, that I’m slightly ahead of a comfortable eye relief so I’ll reset it and start again.
More strangeness today, the above Aguila group is 50m, the one below is 75m.
In my admittedly limited target experience the greater the range the bigger the group size.
It seems however that these Super Extra like 75m better than 50m
If groups are tight but ‘zero’ is changing, I suggest inconsistent position & eye relief are the issue. Small changes in parallax make a big difference. Small changes in position will make a fair difference to cheek weld & eye relief.
If anything was loose, I’d be expecting shotgun style grouping; same with shot release technique. Tipping you try focusing on position and maybe spend some time optimising scope mounting positioning to allow you best margin for error. From memory, a lot of small & budget scopes can be pretty restrictive and unforgiving of variation in eye relief…