I bought a borescope last winter for curiosity Sake. I have a barrel my brother wore out on his benchrest rifle. It looks like a bad gravel road after cleaning. It shoots 5 into less than half inch with 80 grainers.
Yesterday I loaded up 5 105 barts bullets just to see how it shot. The group with cold bore was .365 and without cold bore the 4 shots were .185.
It’s shoots better than the nice looking barrels. Kinda funny after looking at the bore. It’s a 6 br by the way. Edk
