I have two Bergara B14 HMR rifles, one in a 6.5 Creedmoor and the other in 7mm Rem Mag. My question is for people who own this rifle, how long did it take you to have the barrel break in and settled on the velocity of your particular cartridge load? I have not fired either of these rifles yet, the 6.5 Creed is mine and the 7mag will be my grandson for a grad present. The manual mentions there method of first 5 clean after each shot and next 50 clean after each ten, are you seeing the barrel settle down after 55 rounds or are you experiencing longer shot strings? Thanks in advance.