K98 With Chamber Bur Scratching Brass

[7.62x63mmUS]

Posted this on gunboards.com Maybe some calgunners have some advice?

Picked up another RC intended to be used for a shooter. Did the usually complete take down and degrease. Racked a magazine full of cartridges through to check functionality and noticed my cases are getting scratched with a area a couple millimeters wide being shaved off. Stuck a barrel light in and noticed a bur at about 1:00 at the chamber mouth. Is there anything that can be easily done or should I just shoot non-reloadable rounds through this and call it good?

[golddredger]

One of my RC rifles had this also. A slight bur that was shaving a little brass with every shot. So I took a cleaning rod. Wrapped it with some emery cloth and taped it. Put some hops 9 on it and polished the bur gone. Now it loads smooth and easy and no more brass shavings. Hope this helps.