Thread: Breaking in a new barrel

I always follow the break in recommended by Truflight & Nathan Forster or close to that. Fire 1-2 rounds then clean barrel to remove carbon first then clean with copper cleaner, my fav is Boretech Eliminator. After the first pass with Boretech observe the muzzle thoroughly using an LED torch and at a slight angle. You should see some copper fouling in some of the Lanz. Or if heavy Cu fouling then in most lanz & thick. This is what u need to fix. Continue with removal of all Cu. Then clean barrel with JBs paste or autosol, but not too many passes. Focus on throat for 6-8 strokes, then mid section of barrel then finally 3-4 strokes at muzzle. The JBs or autosol is polishing the bore to remove residual machine marks from manufacturing that can cause severe Cu fouling if left unfixed. Repeat above firing 2-3 rounds until you observe light Cu fouling that is easy to remove. Typically takes 2 - 4 cycles , so by 10 - 12 rounds you r done and you’ll have a reliable & accurate barrel, unless you are unlucky and the barrel is a dud. It can happen with all brands of rifle. Good luck