Take this at face value:
From my experience I can not remember any Marine "breaking in" a barrel, yet their rifles fire true for thousands of rounds. Their lives depend on their weapons and the closest they come to a break in procedure is firing the weapon, then cleaning it after a day at the range (anywhere from 80 to 100 rounds)

My personal view; you can call it whatever you want, you should take your new rifle out and shoot it 100 X's or so, just to get used to the weapon. Maybe happen to clean it a couple times during the process. I have no input on the gun barrel industry conspiracy but I am with bigcountry, shoot and clean, it has worked for thousands over the years. While I do not buy into the excessive cleaning theory, I do clean the bore after a day at the range if I fire over 20 rounds or so. I do not clean between each shot.

Tried lapping two barrels with almost no result other than a mess.