Originally Posted By: Eric_MayerIf it's a custom, hand lapped barrel, there is little you need to do, but following a short break-in procedure doesn't hurt anything. If it is a factory barrel, from one of the major rifle manufacturers, I will do a break-in procedure for the first 30 to 50 rounds. Not only does it remove that variable from the equation (if the rifle is not shooting well), but it also helps prevent major copper fouling in the future.
In short. If you are using a bore-guide, normal solvent (Butch's, Shooter's Choice, Hoppes, etc) and brass brushes, there is nothing you can do to the barrel by cleaning it/breaking it in.
Eric
X2 I'd say Eric is pretty spot on with that.
Anything I have with a custom barrel, I just shoot it.
Factory barrels are a little different animal and will usually benefit from a regimented break in process.
Opinions will likely vary but I'm a firm believer in always using bore guides, too!