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#5529100 - 01/08/15 09:02 PM Is breaking in a modern rifle barrel really needed? >>
bradtown Offline
Woodsman

Registered: 03/27/12
Posts: 219
Loc: Concho Valley
Gotta RRA Fred Eichler Series LAR-15 coming.
I dont really wanna spend a full day at the range cleaning the thing, Is barrel break in an important detail?

- specifics -

As for Eichler Series barrels, well, here’s where things get kinda interesting. The medium-heavy 16-inch barrel is bead-blasted stainless steel and is cryogenically treated. Cryogenic treatment is something of a hot topic among accuracy-freak rifle shooters these days, and the claims made and positions taken on both sides are nearly as extreme as those of the warring parties in the never-ending gas-piston versus direct-gas-impingement argument.

Proponents of cryogenic processing observe that all barrels are produced by boring and machining, which causes stress in the microstructure of the metal, and that different types of forgings and castings cool at internally differential rates, also inducing residual stress. Heat treating also leaves residual stress. This hidden stress is what causes an individual barrel to bend or warp as it heats up from firing, resulting in “random” stringing, walking, or wandering of your shots. This is one reason why good three-shot rifle groups are easier to get than good five-shot groups. A barrel may seem to shoot well but not as well as it could for as long as it should.

Cryogenic treatment is the process of deep freezing a barrel to around -300 degrees and keeping it there for a predetermined time with periodic thermal cycling to relieve residual stress from the barrel material and permanently stabilize its grain structure at the molecular level. The one-time cryogenic process claims to relieve this stress, provide more consistent groups, less friction, heat and wear for improved barrel life and easier cleaning—and about 50 to 60 fps increased velocity.




Read more: http://www.rifleshootermag.com/rifle...#ixzz3OHvsEc8w

TIA smile

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#5529133 - 01/08/15 09:18 PM Re: Is breaking in a modern rifle barrel really needed? >> [Re: bradtown]
ckat Offline
Pro Tracker

Registered: 12/02/09
Posts: 1069
Loc: Lubbock Area
You'll like that rifle. Congrats!

As far as RRA is concerned, I believe that they specifically state in their owner's manual that barrel break-in is not needed. They may hand lap their barrels. Not certain... it has been too long. I would have to dig and find my manual.

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#5529227 - 01/08/15 09:59 PM Re: Is breaking in a modern rifle barrel really needed? >> [Re: bradtown]
syncerus Offline
Pro Tracker

Registered: 12/01/08
Posts: 1989
Loc: Dallas, TX
The serious benchrest guys I shoot with take it quite seriously, but most think it pointless for normal sporting arms. Of course, my opinion is worth what you paid for it.
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#5529793 - 01/09/15 09:23 AM Re: Is breaking in a modern rifle barrel really needed? >> [Re: bradtown]
Sneaky Offline
The "Grouch"

Registered: 10/22/12
Posts: 15874
Loc: Winters
I'm not sure about it. I broke in the barrel on my latest purchase, which is a first for me. It's also built more for precision shooting than my other rifles. I did it for two reasons. One, it won't hurt and might help, so why not. Two, I'm uncertain of the rifles quality (long story), so I'm following the manufacturer's procedure to ensure that I've done my part if it comes up short on the accuracy claims. I haven't sighted it in yet to see. Of course, I won't know if it helped, since I have no comparison. All I can say is that the bore did clean easier as the process progressed, which is in line with their claims. This may be something I continue to do, as a result.
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#5530201 - 01/09/15 12:01 PM Re: Is breaking in a modern rifle barrel really needed? >> [Re: Sneaky]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
popcorn
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#5530571 - 01/09/15 02:35 PM Re: Is breaking in a modern rifle barrel really needed? >> [Re: bradtown]
Buzzsaw Offline
THF Trophy Hunter

Registered: 06/29/11
Posts: 5023
Loc: Frisco, Texas
Really JG,

my two cents.....On my RR predator pursuit I did no break-in, just cleaned it really good afterwards.

Save the shoot 3 clean, repeat deal for a true custom barrel while developing loads.

Great rifle by the way, should get you.75" MOA easy. Mine did, wish I'd a kept it ....
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#5531275 - 01/09/15 07:01 PM Re: Is breaking in a modern rifle barrel really needed? >> [Re: Buzzsaw]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
popcorn again
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Long Range Shooting Instruction
Memberships and Classes Available


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#5531293 - 01/09/15 07:12 PM Re: Is breaking in a modern rifle barrel really needed? >> [Re: bradtown]
cabosandinh Offline
Pro Tracker

Registered: 08/12/13
Posts: 1153
Loc: Dallas, TX

do break it in

I used to do benchrest and I can really tell

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#5531360 - 01/09/15 07:36 PM Re: Is breaking in a modern rifle barrel really needed? >> [Re: FiremanJG]
passthru Offline
THF Celebrity

Registered: 12/05/06
Posts: 10868
Loc: Saginaw, Tx
Originally Posted By: FiremanJG
popcorn again

I'm in. popcorn
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Hunt hard, rest when you're dead.
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#5531369 - 01/09/15 07:37 PM Re: Is breaking in a modern rifle barrel really needed? >> [Re: bradtown]
passthru Offline
THF Celebrity

Registered: 12/05/06
Posts: 10868
Loc: Saginaw, Tx
Unless you have what it takes to professionally lap (sp) your barrel then do a break in. It's an investment in your investment.
_________________________
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NRA Life Member
southwestdocks@gmail.com
http://www.threefingersbowhunting.com/

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#5531408 - 01/09/15 07:56 PM Re: Is breaking in a modern rifle barrel really needed? >> [Re: bradtown]
wburke2010 Offline
Extreme Tracker

Registered: 06/26/13
Posts: 4687
Loc: Nevada, TX
I always break mine in. I load up some rounds and go shoot it. Ones it starts shooting like crap I clean it....

Walter

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#5531419 - 01/09/15 08:02 PM Re: Is breaking in a modern rifle barrel really needed? >> [Re: wburke2010]
Tye Offline
Veteran Tracker

Registered: 01/18/07
Posts: 3308
Loc: Eastland county
Originally Posted By: wburke2010
I always break mine in. I load up some rounds and go shoot it. Ones it starts shooting like crap I clean it....

Walter


X2
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If you shoot a young deer because a neighbor will shoot it, you are that neighbor.

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#5531488 - 01/09/15 08:46 PM Re: Is breaking in a modern rifle barrel really needed? >> [Re: bradtown]
scalebuster Offline
Pro Tracker

Registered: 11/25/10
Posts: 1892
I had killed over 100 deer by 1989 with a used 30-30 and a used .243 BLR. I had never even heard of breaking in a gun until I bought a new Rem .270 and a freind of mine I shared a reloading setup with recommended breaking in a barrel. We broke that mountain rifle in and it shot just as good as the other rifles I had. That season we also killed over 200 head shot deer with his 22-250 ( 100,000 acre ranch) that had never been properly broken in and bought at a pawn shop.


In conclusion I will always break in a barrel butt I don't think it does anything but make you feel better about your weapon.

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#5531518 - 01/09/15 08:54 PM Re: Is breaking in a modern rifle barrel really needed? >> [Re: bradtown]
charlesb Offline
Pro Tracker

Registered: 04/07/10
Posts: 1408
Loc: West Texas mountains
Some barrels get more good out of a break-in than others. - All get some good out of it, but it varies according to the manufacturing process used to make the barrel.

People who do not break in a barrel have no way of knowing how much better it might have been if broken in properly.
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#5531531 - 01/09/15 08:58 PM Re: Is breaking in a modern rifle barrel really needed? >> [Re: charlesb]
wburke2010 Offline
Extreme Tracker

Registered: 06/26/13
Posts: 4687
Loc: Nevada, TX
Originally Posted By: charlesb
Some barrels get more good out of a break-in than others. - All get some good out of it, but it varies according to the manufacturing process used to make the barrel.

People who do not break in a barrel have no way of knowing how much better it might have been if broken in properly.





I agree to disagree.... What does shooting three rounds and cleaning then repeating that do to "break in a barrel"?

Walter

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