Well, I've got to agree some and disagree some. It really depends on the barrel. Some barrels come out really good out of the milling process and some come out a bit rough. It's the rough ones that need TLC when breaking in. You will know after 5 rounds or so if you are getting excessive copper buildup. I use Wipeout and or copper melt. If the patches have some copper, then a more liberal break in is fine. If the patches are loaded, it may take 50 rounds or so to smooth things down.

I usually run the first bullet through the chrony and then fire a 3 shot group.....then check things out. My last Tikka was "broken in" in 12 to 15 rounds. Usually by the time you've sighted it in and fiddled with the loads.....she is ready. I always clean after each of the first three 3 shot groups then go from there. Good luck and regards, Rick.