Originally Posted by tomestone
How many rounds does it take to break in a new barrel(300WM)before starting load development?
Depending on the quality of the barrel from 9 to 20 normally some barrels take more
and factory barrels have taken as many as 60 before they settled down. On these barrels
after 15 rounds I shoot 3 and clean and at some point I will just start using it if it is good
enough to hunt with at close range.
Some of my best barrels have stopped fouling after 5 or 6 rounds.
J E CUSTOM