I have never (broke in) any of my new barrels I just fired 4 or 5 times gave it a good cleaning and started shooting groups,when my groups would open up I gave it another cleaning and so on. no real procedure.and I have had pretty good luck so far.the same way with my brand new douglas ss bull in
6mm ppc its a tack driver
I think you should not take a new rifle out and just fire 100 or so rounds without a cleaning
