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#202887 - 10/24/19 11:47 AM Re: How crucial is properly breaking in barrels? [Re: ruger4570]
BIZZMO
newbie


Registered: 12/19/18
Posts: 27
Loc: california

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A rifle builder explained barrel break-in to me,microscopic fibers like hairs are leftover from the machining process and when you send a bullet down the bore you lay them down trapping carbon/copper particles underneath them ,running a cleaning patch helps clear it out for the next round, after several cycles of this the fibers have worn out and are gone..in theory! I Really don't know how much it affects accuracy in a handgun or even a precision rifle but what I have found that it makes your barrel come cleaner with less patches run through it,BTW I have a bore scope and when I think my barrel is clean I look at it and find out that I'm wrong most of the time.This information and 50 cents probably won't get you a cup of coffee .

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#202894 - 10/24/19 09:16 PM Re: How crucial is properly breaking in barrels? [Re: BIZZMO]
Vance in AK.
Pooh-Bah


Registered: 01/18/04
Posts: 2285
Loc: Kenai, Alaska

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I attended a LR Precision Rifle class this year here in Alaska With Frank Gali (Owner of Snipers Hide website) & Marc Taylor from here in Alaska. They were a Marine Scout Sniper team & now do classes together. Both say no formal break in. Clean it before you shoot it. Clan it at the end of the first range session. Don't clean it again until you see accuracy degradation or are putting it away for extended times (Months). With the 308 on many rifles Frank said his only barrel cleaning is a few pulls with a dry bore snake at 500-700 rds.
_________________________
Vance in AK.

Matthew 6:33
"But seek first the kingdom of God and His righteousness, and all these things shall be added to you."

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#203651 - 11/21/19 08:43 PM Re: How crucial is properly breaking in barrels? [Re: karl]
Reloder28
journeyman


Registered: 05/05/14
Posts: 77

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My break-in procedure:
Load & fire, repeat.

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#203698 - 11/23/19 12:03 PM Re: How crucial is properly breaking in barrels? [Re: Reloder28]
RH Custom Guns
journeyman


Registered: 10/17/18
Posts: 62
Loc: Fredericksburg, TX

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On all the guns I've built using various well-known barrel makers, only one has ever shown improvement after a "break in." I say that because it magically went from 2MOA to .5MOA after about 50 rounds of .300 WBY and some cleaning. All the other barrels I use have shot well from the first round.

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#203702 - 11/23/19 02:33 PM Re: How crucial is properly breaking in barrels? [Re: RH Custom Guns]
H2OBUG
Pooh-Bah


Registered: 02/13/08
Posts: 2145
Loc: Louisiana

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In my experience low quality barrels respond well to a break in cleaning process. High quality custom barrels are really smooth already and you don?t gain much with the extra cleaning.
_________________________
If it jams force it! If it breaks it needed replacing anyway.

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