I kinda let the barrel tell me whats going on. I will shoot one shot, clean, and do that a few more times, if alot of copper comes out and nothing changes, I will decide to go further or quit. Then go to 5 shots, and see if anything has changed. I won't just go thru a procedure. Some barrels never will smooth out. At max, I will go thru 20 shots. A quality barrel, you should see it fouling much less after 3 rounds, and so on.

I really don't think its needed, but helpful. I think you can get the same result by shooting alot and cleaning after every session. I mean its copper on steel. But what I do like is my extreme spreads and std deviation on velocity seems to settle in after breaking in at 20 rounds instead of 100 rounds, just shooting and cleaning. Then I can get to some quality load workups.