Breaking in a barrel....Nosler Style!

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FOTIS

Range Officer
Staff member
Oct 30, 2004
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Advise on how to break in a rifle. This one is for a Nosler 48 rifle, but is applicable to all rifles. Nosler staff was nice enough to provide us with this data.

You can not lose by following this procedure.


Nosler4":1q186ugw said:
The barrels are hand lapped but a good break-in on a new barrel never hurts. Here's the info from our break-in sheet:

Shoot one, clean, for first ten rounds.
Shoot three, clean, for next fifteen rounds.
shoot five, clean, shoot a fouler round, and then shoot five for accuracy.

Allow barrel to cool to ambient temperature before shooting each series of break-in rounds to avoid unnecessary throat erosion. When testing a new load, it is necessary to clean after each powder change.

When Cleaning:

DO use a good coated cleaning rod.
DO use a bore guide.
Do Clean from the chamber end.

DO NOT use a stainless bore brush.
DO NOT leave strong ammonia cleaning products in your bore for extended periods of time -- additionally, do not allow solvents to contact stock as it will remove the finish!
DO NOT shoot your barrel hot enough to brand cattle!

Clean powder residue from bore using Shooter's Choice or Butch's Bore Shine following instructions on bottle.

Follow with Montana X-Treme Copper Killer to remove copper fouling. Instructions on bottle work the best.

Follow with a second Shooter's Choice or Butch's Bore Shine patching, then dry patch.

Finish with Tretra Gun Oil or Montana X-Treme Bore Conditioner Accuracy Gun Oil. Shooting a dry bore will greatly promote copper fouling.

Once the barrel is broken-in, remember to clean your barrel after every 20-rounds to keep your accuracy optimal. A dirty bore is a primary cause of poor accuracy.


Hopefully that helps! :grin:
 
Fotis, thanks for posting this information.
This is exactly what we are following to break in Sue's M48 280AI.

JD338
 
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