But what this guy doesn' t mention is his barrels are high quality with very nice reamer jobs with very little tooling marks. Not mass production barrels that are turned out by the hundreds.

I have broke in a bunch of guns. It doens' t hurt to do it contrary to what alot of people on here read in there magizines. Its an extra 4 or five cleanings than would regularly be. So the only life your killing off the barrel would be like 4 or 5 shooting sessions. Or for me a month or 2 worth of life.

If you do the procedure, you will notice less and less time to clean the copper out each step. Now sure you can do this by just shooting 4 or 5 sessions or hurry up the process a tad. What I have done lately is to shoot a gun and do the break in until I see copper not majorly building up . If after 20 to 40 rounds, the guns still copper fouls badly, I then break out the JB' s. I run this thru the bore about a hundred times, concentrating mainly on the place the the throat meets the rifling. Some factory rifles can never be smooth enough, some just need time like 100 rounds.

I have bought rifles off people who didn' t give them time for the barrel to smooth out. They said break in was bull and went to the range, shot 20 rounds, got 3" groups and said the gun was junk. I buy it for 30 to 40% discount and run some JB' s down as explained, and then 40 rounds later, this gun is a subMOA gun. Now I see my best buddy secretly going to the range, without telling me breaking in his new 270WSM. Wow, the same guy who told me barrel break in is bull and I got a nice Mod70 270Win off of.