We've got a gunsmith near me that's done work for a couple of buddies and myself. His name is Don Geraci and in the 1980's he held a bunch of benchrest world records, he's in the benchrest hall of fame, etc.
He tells me to do a break in procedure like Krieger recommends so I do it. I figure if Krieger & a guy with a bunch of shooting records says do it then I'd probably better listen to them.
I only do it with good custom barrels. I don't worry about it with factory rifles, you're not going to smooth out a $20 barrel.
