Re: Rifle problem with groups
I agree with what was already stated. Check the action screws and anything touching the action/bedding. Rscott brought up something very interesting and I hope it does not apply. Check your bolt lugs to make sure they haven't gauled.
Another possibility is if you've had any work done on the rifle lately. After having my target rifle for a year, I noticed accuracy diminishing, like yours. After investigating the problem, I discovered I needed a pillar bed job done. Once I had it done, I keep the action screws torqued to a specific value each time I go shoot and I now sport 1/4 moa accuracy.
Run as fast and as long as you can... my little friend
will catch up and set you free.