New Rifle -- barrel break in

[H380]

Just bought a new rifle --300 Win . Mag .. do I need to " break in " the barrel and how ?

[Lefty-Canuck]

I would give it a good clean before you put the first round through it. Get all the grease/oil/gunk out if it if there is any.

Lefty

[260 Rem]

Probably the most common break-in procedure is to shoot and clean between each of the first ten shots. You will get lots of opinions ---some supporting break-in and some saying to forget it. From what I have read, I am of the opinion that break-in makes no difference to accuracy or barrel life..however, I do believe that it makes removing future copper accumulations easier. The theory that I subscribe to, is that when the chamber is reamed, tool marks are left at the throat/barrel junction...and that when you fire a bullet, it lays any "burrs" down...trapping copper under the burr...which cleaning with copper solvent between initial shots removes. If allowed to accumulate, it becomes difficult to remove and makes subsequent cleanings more challenging. After several shots, the burrs get "burned" off. I always do a break-in. For most off-the-shelf hunting rifles used in normal hunting type use....few would notice any difference.

[300-510]

Just shoot it and clean it how you normally do,unless youre switching to moly coats, as some outfits wont warranty barrel after running molys down barrel.

[209x50]

For sure, shoot and clean every round for at least 10. When your rifle becomes easy to clean with minimal patches your are there.