Fun and Games.....an old problem

[muffett.2008]

Yep, same ammo. That's the quick field fix, there's a bit more to it than that though.
It's not just the bolt lugs that need checking, the bolt lug recess is just as important, you may get a wipe on the bolt lug when opening and closing, but the small lug recess may not be contacting in the fully closed position.

I use whiteout to check this contact point, it dries quick, leaves a good skin and is easy to remove afterwards.
One of the Target Shooting crowd came up with a neat spring loaded case that applied backward pressure to the boltface back in the '30's, maybe Central or Rawson, mine has nothing on it.....I rarely even use it, probably because it's never where I thought I left it, so an empty case and cleaning rod down the barrel gives me the same even centred pressure, which you won't get by just cranking and pulling back on the bolt.

Remember though that any change to the bolt requires a few other checks also, Headspace, bolthead clocking, firing pin protrusion just to rattle off a few.

I remember doing a post on the effects of altering various bearing points once before, barrel pressure...up, down, sideways, With and without nosecap, forewood etc. that rifle also had lug contact problems.
The draws have no effect on accuracy if the woodwork is intact, the only effect from the timber is when the timber is driven foreward against the sight when firing......that is assuming the barrel is not bedded along the barrel as most Range Rifles are.
It all comes down to the correct fitment of bolt to receiver and barrel condition.

That article was Bedding and Accuracy and was posted back in 2017, maybe some technosmart can attache it here.