Break in on my SS bbl

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10 years 8 months ago #37035 by OleCowboy
Break in on my SS bbl was created by OleCowboy
Breaking in your AR SS bbl: After much research on b-i procedures I find one commonality among all the variable differences. HEAT, just say NO!

So when I went to break in my SS the other day I followed this procedure: Shoot 5 S L O W L Y, say about 30 sec min between rds. POINT: never allow the bbl to get much more than moderately warn, meaning palm on bbl its barely warm to the touch (yes should have brought my thermo to record temps but would call it at around 100F, not above 105F).

After 5 rds, run a swab with light oil till clean (about 3-4 pulls).

Now, WAIT till bbl is totally neutral to the touch or ambient air temp.

Do 5 more, swab and wait.

I ended up putting 40 down the pipe. Swabbed it till it came out clean, looked down and was amazed, like looking down a mirror.

Not saying this is b-i for all bbls on all guns, but on SS it clearly works...
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10 years 8 months ago #37046 by bipe215
Replied by bipe215 on topic Break in on my SS bbl
I usually do 10 shots, cleaning between each shot (butches bore shine and clp), then do the same at three shot intervals, then 5. You'll read a lot of internet stuff about the subject, but the way I see it, it can't hurt anything. The main thing is to not pile copper up on the little nubs that the machining process left. You can tell how much copper is there when you run the Bore Shine through. I am completing break in on a Rem 700P and am very pleased. Also, this method guarantees the barrel doesn't get too hot.

Steve
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10 years 8 months ago #37056 by Siscowet
Replied by Siscowet on topic Break in on my SS bbl
Armalite recommends: Shots 1 to 9, a patch with bore cleaner after each shot, followed by a brass brush, not synthetic, followed by dry patches.
Shots 10 to 30, same procedure after each 5 shots. Them break in is complete.
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10 years 8 months ago #37073 by MrMarty51
Replied by MrMarty51 on topic Break in on my SS bbl
OH MAAAAN !!!!!!
I bought My Eagle Arms AR10 used, I wonder if the P.O followed any break in procedures ???? if He/She did`nt, I guess I`ll call them the D.P.O. :busted: :rotfl: :rotfl: :rotfl:
I have thought about buying a new barrel for this anyway, just for that reason, although, the bore is bright and shiney after swabbing it.

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10 years 8 months ago #37083 by Siscowet
Replied by Siscowet on topic Break in on my SS bbl
Only stainless steel target barrels need to be broken in. Regular steel chrome lined barrels don't need to be.
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10 years 8 months ago #37085 by MrMarty51
Replied by MrMarty51 on topic Break in on my SS bbl
Thank You Sisco, that takes a load off of the mind. :wave: :twothumbs:

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10 years 8 months ago - 10 years 8 months ago #37216 by OleCowboy
Replied by OleCowboy on topic Break in on my SS bbl

Siscowet wrote: Armalite recommends: Shots 1 to 9, a patch with bore cleaner after each shot, followed by a brass brush, not synthetic, followed by dry patches.
Shots 10 to 30, same procedure after each 5 shots. Them break in is complete.

read that and do not think it's needed ...have talked with some folks who reall know the bbl business as in the manuf. here is the deal...the SS T bbl is a very high qualty bbl that a is triple lapped. I trust that AR has done their job and just not convinced it's needed.

I just did not see any fouling of any kind. My results were amazing. I could not believe my swabs were as clean as they were and got visibly cleaner as I shot. The inside of the bore at the end of 40, in iterations of 5 produced stunning results!!! I do attribute this to the slow pace thus keeping the bbl near ambient temp.
Last edit: 10 years 8 months ago by OleCowboy.

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10 years 8 months ago #37230 by NightForce
Replied by NightForce on topic Break in on my SS bbl
I have 4 Shilen Stainless Steel Barrels so this is what they say..

How should I break-in my new Shilen barrel?

Break-in procedures are as diverse as cleaning techniques. Shilen, Inc. introduced a break-in procedure mostly because customers seemed to think that we should have one. By and large, we don't think breaking-in a new barrel is a big deal.

All our stainless steel barrels have been hand lapped as part of their production, as well as any chrome moly barrel we install. Hand lapping a barrel polishes the interior of the barrel and eliminates sharp edges or burrs that could cause jacket deformity. This, in fact, is what you are doing when you break-in a new barrel through firing and cleaning.

Here is our standard recommendation: Clean after each shot for the first 5 shots. The remainder of the break-in is to clean every 5 shots for the next 50 shots. During this time, don't just shoot bullets down the barrel during this 50 shot procedure. This is a great time to begin load development.

Zero the scope over the first 5 shots, and start shooting for accuracy with 5-shot groups for the next 50 shots. Same thing applies to fire forming cases for improved or wildcat cartridges. Just firing rounds down a barrel to form brass without any regard to their accuracy is a mistake. It is a waste of time and barrel life.
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10 years 8 months ago #37232 by OleCowboy
Replied by OleCowboy on topic Break in on my SS bbl
Night owl , that is my thinking and approach and certainly IAW Shilen and others. In addition as a former aerospace machines to was taught that properly designed and machined and finished needs no break in!

Let me add that I believe that keeping the bbl at or near ambient or body temp is important for the first few shots. I base this upon thermal tempering. By doing 5 then cooling and I do a cycle of 40 rds (2 x 20 boxes). This allows the bbl to thermally set.

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10 years 8 months ago #37235 by Siscowet
Replied by Siscowet on topic Break in on my SS bbl
Cowboy, how is the NRA convention?

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