I went out recently to shoot my set up (T3x on Altitude stock). It shoots well, however I have noticed some significant elevation stringing that I believe is due to the barrel heating up. Impacts keep sinking after about 5 rounds within 10 minutes and if I let it cool impacts return up to normal. Has anyone experienced similar?
Full disclosure: this T3x has been rebored from 7mm rem mag to 338 win mag so the barrel thickness is definitely not what it used to be.
It's also possible that I've completely misread the installation procedure. It has been my impression that it is a simple unscrew-replace-rescrew procedure without any need for bedding. If that is correct, could the issue still be resolved by glass bedding it?
This is not a huge problem as this is primarily a hunting rifle and the important shots will be with a cold bore. Still, load workup at the range is being a PITA because of this.