Worn / Damaged Crown

[RobD]

I have burnished the dinged crowns of a few rifles, with a good cosmetic results. I am too poor a marksman to really know if the group tightened, but I was pleased. I used a long, thick, countersunk brass wood screw, valve grinding paste to go between the screw head and the crown, a power drill/driver to spin the screw, and an aluminium sleeve to protect the bore. I ended up with a sparkling smooth crown and absolutely no damage to the rifling. I can explain in more detail if anyone is interested.