I'm shooting .270 Winchester Supreme Ballistic Silvertips. Those are the black lubalox coated bullets. The last time the bore of my rifle saw a brush and solvent has been at least six or seven years ago. That was something like maybe 30 rounds ago. The barrel gets a oily patch through it at the end of season and a dry patch next fall before I shoot it to dirty the bore, and then a second time to confirm zero. It might see two to five rounds through it during season. And then the oily patch before the rifle goes in the safe. The bore looks like a mirror and holds zero.
I used to shoot Sierra Game Kings in the same rifle and needed to clean it (get copper out) after every time I shot it.
The .22-250 is a different story altogether. Not shooting coated bullets in it and it wants cleaned a lot more often.
Last edited by boattale; December 7, 2012 at 11:12 PM.