I'm going to finally shoot my Blackhole Weaponry/Columbia River Arms 6.5 creedmore tomorrow 11/07/2021.Was wondering about barrel break in.I was told to use copper jacketed ammo for the first 60 rds. and to clean the bore after each rd. through the first 10 then after each 5rds through the first 60.The barrel is a 24" stainless bull barrel with a full muzzle break.