My FL 308 die is gouging my brass

[Great-Kazoo]

those dies need cleaning more than one thinks they do. I use hoppes #9 let it sit till i remember to wipe it out with a q-tip, rinse and repeat. A 223 die had the same issues, till i ran a bore brush through it with some white colgate toothpaste The colgate (white) is a mild abrasive that has worked well many a year for light polishing of gun contact points.