Anybody have a decent DIY method to lightly polish the chamber of a Model 99 in 300 Savage? I seem to be getting some sticky extraction at 2500 fps in mid level loads using Hornady 150 gr bullets. Not stuck bad but have to apply more than normal pressure on the lever to start extraction, also some marks on the case body which seems to show some rough areas in the chamber. Primers look fine. Load is 40 gr. of Varget.