Join Date: Dec 2017
Location: NorthEast, USA...where the snow flies and the wind blows
I had grouping issues when I originally bought my M77-MkII in 30-06. I could only get 2-3" groups at 100 yards. I removed some stock material using sandpaper and a deep wall socket of the correct diameter until the barrel would float all the way back to the receiver. The rifle now shoots 1/2-1" at 100 yards.
Later...I developed a small hairline crack in the original walnut stock (probably during a hunt after falling with it)...but I purchased a Ramline synthetic. I did the same thing before mounting the stock...removed material so it free floated then used Brownell's bedding to bed the action into the stock. The rifle now shoots cloverleaf-3/4" at 100 yards.
I'm not saying this is your issue due to the frequency of the fliers...but it might be something to investigate further. It does sound like the barrel is touching the stock at a single point due to recoil possibly. Check your bolt tightness before/after each shot take a dollar bill and run it down the barrel between the barrel and the stock to see if you have a single point that is touching.
The only stupid question....is the unasked one
Not all who wander....are lost.
Last edited by redhawk0; 02-04-2018 at 08:00 AM.