I have been having some inaccuracy issues with my Tikka T3X in .243, 20” 1:8” twist OEM barrel, factory threaded 5/8x24. I currently have 150 rounds through it.
My best groups have all been around 1.6”, whether with Hornady American Whitetail 100-grain or hand loaded 107-grain TMKs.
This morning, I tightened the action from 45 to 60. It made no apparent difference.
One of the Hornady 100-grain groups from today:
The second group was the same size. The factory ammo seems pretty consistent.
Older groups with the same ammo shot essentially the same size groups.
Two groups with the 107-grain TMKs.
If [mention]B_Reynolds_AK [/mention] or anyone else has suggestions, I am all ears. Worth taking it apart and putting it back together again? Try a different scope? Accept it as rifle with a 1.6” group? I know it doesn’t need to be more accurate for how and where I hunt, but it annoys me that I can’t get better with it.
Edit - I don’t recall adjusting the windage, but it is interesting that in this group from last Tuesday, it was hitting slightly to the right. I need to check whether I adjusted it.
If I didn’t adjust it after this group (and I remember specifically thinking I would not touch the elevation because I am just going to use that ammo up), then if it is wandering left, that could be a scope or mount issue?
Edit #2 - nope, checked the DOPE and the scope. I definitely made the correction for the windage.
Edit #3 - the barrel seems to have sped up by about 50 FPS since the first session (as expected ).