Re: Sako TRG 42 .338 LM
I break mine in by shooting 5, cleaning, shooting 5, cleaning etc etc.I shot about 80 rounds doing this. It may be overkill but with my high end rifles, well hell they are all high end, I like to do as my local barrel maker suggests. It does make cleaning much quicker so to me it is worth the effort. Don't bother with Chrome lined barrels. I clean first with hoppes #9 and then with sweets 762. Don't let the sweets sit there too long.I ruined a barrel by storing my ar15 horizontally after cleaning and some had accumulated in the gas port and dripped slowly and eroded the opposite side of the barrel. Somehow I lucked out and got it replaced under warranty.