Barrel break in.

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13 years 3 months ago #25060 by faawrenchbndr
Replied by faawrenchbndr on topic Barrel break in.

jtallen83 wrote: Technically we all "break in" our barrels, there just seems to be different methods.





:I-agree:

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13 years 3 months ago - 13 years 3 months ago #25079 by magi
Replied by magi on topic Barrel break in.

SOC wrote: A sparkling clean bore (free of all oil and fouling) will exacerbate "Cold bore" shot variation.

FYI in the field snipers go as long as possible without cleaning the bores of their rifles.


This is interesting....... But after what I've heard from you guys.... I don't know what I'm gonna do......
Last edit: 13 years 3 months ago by magi.

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13 years 3 months ago #25081 by jtallen83
Replied by jtallen83 on topic Barrel break in.

magi wrote:

SOC wrote: A sparkling clean bore (free of all oil and fouling) will exacerbate "Cold bore" shot variation.

FYI in the field snipers go as long as possible without cleaning the bores of their rifles.


This is interesting....... But after what I've heard from you guys.... I don't know what I'm gonna do......


Go with the Armalite instructions, better safe than sorry. :usa:
The following user(s) said Thank You: magi

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13 years 3 months ago #25156 by Maddog
Replied by Maddog on topic Barrel break in.
I brought up this subject when I joined the site a few months back. While I am still waiting on my AR-10T to deliver....I still haven't made up my mind about which way to proceed. I'll probably do an abbreviated "break-in". Armalite doesn't help matters here with these two technical notes:

www.armalite.com/images/Tech%20Notes/Tec...arrels,%20030205.pdf

www.armalite.com/images/Tech%20Notes/Tec...20Rifle%20031230.pdf See "Break In Period"

But as I was told earlier....any time at the range is good time, even if it's interrupted by some cleaning :)

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13 years 3 months ago #25162 by SOC
Replied by SOC on topic Barrel break in.
The first tech note seems to be for 10T the second for standard 10.

Funny that they recommend Molly lubed bullets in the second tech note.

I belong to the group of thought that molly bullets are to be avoided.

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13 years 3 months ago #25167 by magi
Replied by magi on topic Barrel break in.

Maddog wrote: I brought up this subject when I joined the site a few months back. While I am still waiting on my AR-10T to deliver....I still haven't made up my mind about which way to proceed. I'll probably do an abbreviated "break-in". Armalite doesn't help matters here with these two technical notes:

www.armalite.com/images/Tech%20Notes/Tec...arrels,%20030205.pdf

www.armalite.com/images/Tech%20Notes/Tec...20Rifle%20031230.pdf See "Break In Period"

But as I was told earlier....any time at the range is good time, even if it's interrupted by some cleaning :)


Yup yup yup.. For sure on all the above.........

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13 years 3 months ago #25168 by magi
Replied by magi on topic Barrel break in.

SOC wrote: The first tech note seems to be for 10T the second for standard 10.

Funny that they recommend Molly lubed bullets in the second tech note.

I belong to the group of thought that molly bullets are to be avoided.


Because I'm using Frogman Man Spit....... I don't need Molly bullets........ And mine smells better.... Although I like rosemary better than sudo mint.......

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13 years 3 months ago #25180 by Lizardette
Replied by Lizardette on topic Barrel break in.
I'm going to try some moly-coated bullets soon. I'll let you all know how that works.

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13 years 3 months ago #25232 by Maddog
Replied by Maddog on topic Barrel break in.
So today I'm getting some groceries and I see "Rifle Shooter" magazine. One of the listed articles is about....wait for it....barrel break-in. Author is Dick Metcalf. His take on break-in is "if it's shooting good don't do it". If it's not, then do it. Seemed like a pretty straight forward approach to me. He also said that most manufacturers of high end guns use aftermarket barrels (or in-house built but to tight tolerances) and they should not require break-in....especially if they are lapped.

My gun, on order, has the 20" triple lapped barrel so I think I'm going heed his advice to a point. When I ordered it, Armalite told me that it would shoot best with 168 gr match ammo so there's my starting point. They also said that the BCG should be swimming in oil("too much is not enough" in their words) for ~200 rounds.....this is just to let the BCG settle in.

Just another data point for the mix. I'm sure that other writers might have a differing opinion.

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13 years 3 months ago #25248 by magi
Replied by magi on topic Barrel break in.
interesting.......

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