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#6384365 - 07/27/16 10:02 AM How many rounds does it take
Bbear Offline
Tracker

Registered: 11/24/13
Posts: 675
Loc: West Texas
To 'break-in' a new barrel? Not concerned with HOW its done, but rather how many shots do you feel it would take? I realize every barrel is different, but, on average?

Factory vs other manufacturers - any differences there?

Seems I remember a discussion somewhere where the individually manufactured barrels took far fewer rounds to get broken in than did the factory stuff.

What's everyone's thoughts on it?


Edited by Bbear (07/27/16 10:04 AM)
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#6384379 - 07/27/16 10:12 AM Re: How many rounds does it take [Re: Bbear]
Pig_Popper Online   content
Tracker

Registered: 08/16/15
Posts: 801
Loc: Fort Worth
50 rounds to build up copper equilibrium

I'd say more custom / individual barrels are lapped vs factory barrels which may play in to what you read on one breaking in sooner than the other.

Safe shootin'


Edited by Pig_Popper (07/27/16 11:10 AM)
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#6384386 - 07/27/16 10:18 AM Re: How many rounds does it take [Re: Pig_Popper]
JJH Online   content
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Registered: 10/03/06
Posts: 3488
Loc: Katy
what is carbon equilibrium?

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#6384424 - 07/27/16 10:38 AM Re: How many rounds does it take [Re: Bbear]
Pig_Popper Online   content
Tracker

Registered: 08/16/15
Posts: 801
Loc: Fort Worth
Slight copper buildup in the barrel


Edited by Pig_Popper (07/27/16 11:09 AM)
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#6384435 - 07/27/16 10:44 AM Re: How many rounds does it take [Re: Pig_Popper]
JJH Online   content
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Registered: 10/03/06
Posts: 3488
Loc: Katy
Ok. never heard that term. So the accumulation of carbon in the barrel reaches equilibrium at some point and does not increase after that?

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#6384438 - 07/27/16 10:49 AM Re: How many rounds does it take [Re: Bbear]
specialed309 Offline
Woodsman

Registered: 01/24/16
Posts: 142
The myth continues...
This should be fun...

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#6384477 - 07/27/16 11:11 AM Re: How many rounds does it take [Re: Bbear]
Pig_Popper Online   content
Tracker

Registered: 08/16/15
Posts: 801
Loc: Fort Worth
No I misspoke and corrected - thanks , need more coffee
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#6384498 - 07/27/16 11:32 AM Re: How many rounds does it take [Re: Bbear]
JJH Online   content
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Registered: 10/03/06
Posts: 3488
Loc: Katy
Bbear: the simple, yet unfulfilling, answer to your question is that "it varies".

I would suggest to go the the Shilen and Kreiger websites, click on FAQ and ready what they say about barrel break-in and cleaning. Very enlightening.

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#6384511 - 07/27/16 11:38 AM Re: How many rounds does it take [Re: Bbear]
603Country Online   content
THF Trophy Hunter

Registered: 07/03/12
Posts: 5242
Loc: Central Texas
Just shoot it. Don't worry about break-in of the barrel.

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#6384515 - 07/27/16 11:40 AM Re: How many rounds does it take [Re: Bbear]
Kevin1 Online   content
Bird Dog

Registered: 04/06/11
Posts: 385
Loc: Allen Tx
Barrel break in will reduce your barrel life. It's a myth invented by barrel makers to sell more barrels.

Read this.
http://www.6mmbr.com/GailMcMbreakin.html

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#6384534 - 07/27/16 11:49 AM Re: How many rounds does it take [Re: 603Country]
JJH Online   content
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Registered: 10/03/06
Posts: 3488
Loc: Katy
Originally Posted By: 603Country
Just shoot it. Don't worry about break-in of the barrel.


I have come to agree with this...at least for hunting rifles. Can't speak to benchrest


Edited by JJH (07/27/16 11:52 AM)

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#6384606 - 07/27/16 01:09 PM Re: How many rounds does it take [Re: JJH]
FiremanJG Online   content
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Registered: 12/16/08
Posts: 19129
Loc: Wolfe City, TX
My process for any barrel, button rifled, or cut rifled.

1. Clean with solvent, followed by dry patches until they are white.
2. Shoot 20 rounds down it.
3. Perform a ladder test.
4. Group shoot the loads that were in the node within the ladder.
5. Reproduce said load for as many pieces of brass I still have available
6. Shoot it without cleaning until accuracy degrades.
7. Clean
8. Refoul the barrel
9. Shoot some more.
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#6384702 - 07/27/16 02:21 PM Re: How many rounds does it take [Re: Bbear]
RiverRider Online   content
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Registered: 11/11/07
Posts: 6667
Loc: Wise Co.
I have had two brand new rifles that were mediocre performers at first, but began to shoot much better after about 150 rounds or so. I did NOT go through any kind of "break-in" procedure.
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#6384859 - 07/27/16 03:56 PM Re: How many rounds does it take [Re: Bbear]
Bbear Offline
Tracker

Registered: 11/24/13
Posts: 675
Loc: West Texas
Fireman, Thanks! That's very close to what I did. Still have another 5 rounds to go down-pipe. That'll leave me 30 more of the factory stuff (Lapua 123 Scenars) to play with.
I'll work on some 140 gr loads and see how the ladder works.

I was thinking that with a non-factory barrel, it wouldn't take all that many to get things going.
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#6385365 - 07/27/16 10:06 PM Re: How many rounds does it take [Re: Bbear]
RickC Online   content
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Registered: 08/25/10
Posts: 810
Loc: Fort Worth
I think they are all different, but I personally saw three Rem 5R rifles shoot 1.5 MOA until 150 rounds down the tube, When the groups in each went sub MOA. Not sure why, but I convinced the 3rd shooter to hang in there to 150, and sure enough, it came into its own.
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