Dirty. A couple of winters ago, I got ambitious and cleaned about 30 of my daily go-to rifles. Was real proud of myself. Put them up in the safe all clean. Took a couple varmint rifles out in early spring. .5MOA rifles went to 3MOA rifles.
Now I had to go back and find EVERY rifle that I had "deep cleaned" to re-sight in and "re-dirty" or foul the barrels.
Last rifle barrels I cleaned, those were. I clean bolts religiously, firing pins, etc. Gas guns get bolts disassembled and run through sonic cleaner and re-oiled. I don't clean barrels any more.
Now I had to go back and find EVERY rifle that I had "deep cleaned" to re-sight in and "re-dirty" or foul the barrels.
Last rifle barrels I cleaned, those were. I clean bolts religiously, firing pins, etc. Gas guns get bolts disassembled and run through sonic cleaner and re-oiled. I don't clean barrels any more.