Don't believe in barrel break in for any rifle. Three of my centerfire rifles got new barrels this year. Those barrels got cleaned and then fired at the range. After the first range session they were cleaned again. Those guns turn in < .75" three shot groups at 100 meters.

The Bergara barrels are very smooth. The cheap CVA non-Bergara barrels are smooth too. TC is famous for sending out rifles with rough barrels: They are accurate but hard to load. i work them over using jeweler's rouge.