The Truth About Break-In Procedures for New Barrels

Few debates in the shooting world are as heated as whether you should “break in” a new barrel. Some swear by a shot-clean-shot method; others call it snake oil. So, what’s the truth?

The Traditional Break-In Routine

The old-school method looks like this:

• Fire one round, clean the barrel

• Repeat 10–20 times

• Then shoot in small groups, cleaning between each

The idea is that early shots “smooth out” imperfections inside the bore.

The Case FOR Barrel Break-In

• Early copper fouling is reduced.

• Micro-burrs or tooling marks can be smoothed.

• Some barrels (especially cheaper ones) show improved consistency.

The Case AGAINST Barrel Break-In

• Modern barrels are hand-lapped and polished at the factory.

• Over-cleaning with rods and brushes can cause more wear than shooting.

• Many manufacturers say it’s unnecessary.

What Matters More

• Cleaning Habits: Use proper solvents, don’t overdo it.

• Ammo Choice: Quality ammo yields consistent fouling.

• Crown & Chamber Quality: These affect accuracy more than break-in.

Gunsmith’s Perspective

For most modern barrels, break-in is largely unnecessary. But on certain custom builds or budget barrels, a light break-in can’t hurt.

Conclusion

Don’t stress over rituals. Instead, focus on maintaining your barrel properly, using good ammo, and letting your gun tell you what it likes.

👉 Got a new rifle? JT Arms can inspect your barrel, crown, and chamber to maximize its accuracy—no myths, just results.