Good advise by others...I'd bed and float. I generally ignore the notion that a light barrel needs up pressure to shoot. If it does, I don't want it generally.Other issues crop up,like this.
If you are going to leave it bedded, at least use a softer front rest....hard, firm sandbags are sometimes hostile environments for a light tube beeded to a stiff stock....recoil forces cause the rifle to jump off the firm rest and vibrations get transmitted to the barrel, causing funky grouping,stringing, etc., like you see.
Sometimes, shooting from a softer position (like from your hands, or with a softer front rest),dampens vibrations,and the rifle will shoot better.
Floating attenuates some of this.I have seen guys with Weatherby lightweights go through the same stuff....a good bed job and floating cured it.
Last edited by BobinNH; 02/21/12.
