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SilentDeath12886
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Posted: 6/24/2012 10:43:56 PM
[Last Edit: 6/24/2012 10:57:30 PM by SilentDeath12886]

THE IMAGE ABOVE IS A PAID ADVERTISEMENT
What kind of contour is everyone running?

I recently got back my first precision rifle. It has a Bartlein M24/M40 #14 barrel contour. .900" at the muzzle with 1.200" at the breech end extending to 3." The thing weighs like a beast. It is much heavier than anticipated. I was considering maybe having the barrel recontoured to reduce weight. Is this a typical precision rifle contour? I've seen many users who have used the MTU contour which appears to actually be heavier than the M40 contour. Am I just a weakling and need to suck down some protein shakes?

Its currently chambered in 30-06 in a M700 action.

Any recommendations? I do not want to sacrifice a lot of barrel stiffness and its ability to absorb more heat, but I understand I'll lose a bit of both by reducing the profile.

How much weight could I lose by having it fluted? Maybe 4 straight flutes?
TheTacticalCoyote
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Posted: 6/25/2012 12:57:45 AM
You will lose at most 6-8 ounces by having it fluted. I prefer a #7-8 contour.
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AdamJ
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Posted: 6/25/2012 10:04:56 AM
How long is the barrel, my savage 6.5cm lrp factory barrel is 26" 1.12" at breach slightly tapering to 1" at the muzzle. It ia fluted, but with a Mcree and ss5-20 weights in at 16.5 lbs. I did just order a 26" 1.12"- .850"@muzzle brux for it as it is a pig.
SilentDeath12886
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Posted: 6/25/2012 5:22:50 PM
24"
BookHound
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Posted: 6/25/2012 7:04:03 PM
The "Sendero"/"Remington Varmint" contour is hands down the most popular contour we install on customers' rifles. It is a great "all purpose" type contour. It is not a skinny little hunting weight barrel that will string shots after just a few rounds. It is great for most people who target shoot yet light enough to hump around the wounds by most guys hunting deer. Heavy/stiff enough for use with a suppressor without excessive barrel whip. Brux also has a #15 Standard Palma that is pretty close.

When I had my last rifle built I went with a Rock Creek Sendero contour.



Mark
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BookHound
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Posted: 6/26/2012 8:05:23 AM
[Last Edit: 6/26/2012 8:11:09 AM by BookHound]
I took these pictures recently to help someone better understand barrel contours. Hopefully it helps here. The factory barrel shown is off a Remington factory "sendero".







Edit to add: I am pretty certain the #4 contour is a Brux but I grabbed all Rock Creek barrels for the other ones. Each barrel manufacturer has similar but potentially slightly different contours and/or naming conventions. For example, a Broughton #5.75 is pretty close to a Rock Creek "Sendero". When barrel shopping you need to look at different manufacturers' contour specs to really compare things or talk to a 'smith who knows the contours pretty well and they can help you pick a contour bases on what you want to do with the rifle. The one caution though is that when you call and say, "I want a M24 contour" I think a lot of builders assume you know exactly what you are talking about and they just take the order. Lots of guys want heavier barrels so if you go into the communication process with your builder sounding confident in your component selection, you might not be questioned. Make sense? That sounds a little like what happened to the OP here and that is unfortunate. Don't be afraid to ask questions.


Mark
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LoneWolfUSMC
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Posted: 6/26/2012 9:11:21 AM
I definitely prefer lighter barrels than most. I usually stick close to a Remington Varmint profile. It doesn't string shots when hot and it is still a handy weight for when you have to shoot from ungainly positions.

Out of necessity I had to buy an "off the shelf" tube for my AE. It's a telephone pole. I am not sure what Krieger calls this profile, but it definitely screws up the balance of the rifle. When I can order a replacement I will be going back to the standard AI profile.
Rob01
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Posted: 6/26/2012 10:14:45 AM
I run Bartlein M40/M24 contours on all my rifles except my Creedmoor which has an MTU. No problems with the weight or balance for me. They are all about 26" except my .308 which is 22". I am having a .243 built with a 26" and it will be a switch barrel with another 26" .308 both in M40/M24 contour.
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FedDC
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Posted: 6/26/2012 3:15:48 PM
My last build was with a fluted M24 contour and I agree that it is a beast...prone only. No way you are shooting that rifle off hand for any length of time.
1HI4X
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Posted: 6/26/2012 5:52:48 PM
Where do the Police & 5R barrel profiles fit? Are these just Sendero profiles?
LoneWolfUSMC
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Posted: 6/26/2012 7:01:48 PM
Originally Posted By 1HI4X:
Where do the Police & 5R barrel profiles fit? Are these just Sendero profiles?


Remington Varmint
SilentDeath12886
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Posted: 6/26/2012 9:12:31 PM
[Last Edit: 6/26/2012 9:12:45 PM by SilentDeath12886]
The Remington Varmint and the Sendaro looks like a huge improvement.

What is the muzzle end diameter on the sendaro contour?
matt33
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Posted: 6/26/2012 11:08:55 PM
Originally Posted By SilentDeath12886:
The Remington Varmint and the Sendaro looks like a huge improvement.

What is the muzzle end diameter on the sendaro contour?


Info I've found says around .830", but I don't own a Sendero to measure. I just ordered a Broughton 5.75 for my Sako TRG which as another poster said is just about the same as a Sendero.
Boomholzer
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Posted: 6/27/2012 10:06:44 AM
[Last Edit: 6/27/2012 10:07:23 AM by Boomholzer]
Originally Posted By SilentDeath12886:
The Remington Varmint and the Sendaro looks like a huge improvement.

What is the muzzle end diameter on the sendaro contour?




http://www.bartleinbarrels.com/contours.htm

I have a #6 @ 24" and in retrospect would have gone with a #5.
SilentDeath12886
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Posted: 6/27/2012 7:37:23 PM
Will any of these barrel suffer from stringing from rapid fire?

I noticed that Bartlein had a Whitley Med Palma contour which I am liking since it seems to be the middle ground between a Sendaro and #14/M40 contour. Some images of the Sendaro contour makes the barrel look like a thin sporter contour. Do Rem Sendaro rifles have sendaro contours?

I do have intentions of shooting this rifle suppressed, so I am kind of worried that a sendaro is not thick enough to support my AAC 762SD.
BookHound
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Posted: 6/28/2012 10:00:11 AM
Originally Posted By SilentDeath12886:
Will any of these barrel suffer from stringing from rapid fire?

I noticed that Bartlein had a Whitley Med Palma contour which I am liking since it seems to be the middle ground between a Sendaro and #14/M40 contour. Some images of the Sendaro contour makes the barrel look like a thin sporter contour. Do Rem Sendaro rifles have sendaro contours?

I do have intentions of shooting this rifle suppressed, so I am kind of worried that a sendaro is not thick enough to support my AAC 762SD.


I use an Allen Engineering AE30, which is bascially an Ops Inc 12th Model with a standard 5/8x24 thread and no muzzle brake. Barrel is 22" finish. That Sendero barrel doesn't "string" anything with the can on or off even during long range sessions of hundreds of rounds.



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SilentDeath12886
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Posted: 6/28/2012 5:37:13 PM
Any places where I can get barrels contoured? I inquired with the person who built my rifle and he referred me that the barrel would have to be sent back to Barltein for work.
SilentDeath12886
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Posted: 6/29/2012 8:14:43 PM
Barrel is going back to my builder to get sent out to Bartlein. I opted for the Medium Palma #11. No real reason beyond aesthetics. The medium palma and sendero/varmint have similar contours and similar weight @ 24".

I was already sending my builder an LR308 that I need some work done, so I figured I'll get everything out at once and get everything back at the same time.

Thanks for the input everyone!
jtdam24
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Posted: 7/2/2012 11:48:30 AM
Originally Posted By BookHound:
I took these pictures recently to help someone better understand barrel contours. Hopefully it helps here. The factory barrel shown is off a Remington factory "sendero".

http://i1101.photobucket.com/albums/g426/AccurateOrdnance/Firearm%20Components/barrels_04_caLarge.jpg

http://i1101.photobucket.com/albums/g426/AccurateOrdnance/Firearm%20Components/barrels_02_caLarge.jpg

http://i1101.photobucket.com/albums/g426/AccurateOrdnance/Firearm%20Components/barrels_01_caLarge.jpg

Edit to add: I am pretty certain the #4 contour is a Brux but I grabbed all Rock Creek barrels for the other ones. Each barrel manufacturer has similar but potentially slightly different contours and/or naming conventions. For example, a Broughton #5.75 is pretty close to a Rock Creek "Sendero". When barrel shopping you need to look at different manufacturers' contour specs to really compare things or talk to a 'smith who knows the contours pretty well and they can help you pick a contour bases on what you want to do with the rifle. The one caution though is that when you call and say, "I want a M24 contour" I think a lot of builders assume you know exactly what you are talking about and they just take the order. Lots of guys want heavier barrels so if you go into the communication process with your builder sounding confident in your component selection, you might not be questioned. Make sense? That sounds a little like what happened to the OP here and that is unfortunate. Don't be afraid to ask questions.


Mark


This is great. Where do the AMU/MTU, and palma profiles fit in?
Jack Burton: This is gonna take crackerjack timing, Wang.
SilentDeath12886
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Posted: 7/2/2012 6:59:54 PM
Originally Posted By BookHound:
I took these pictures recently to help someone better understand barrel contours. Hopefully it helps here. The factory barrel shown is off a Remington factory "sendero".

http://i1101.photobucket.com/albums/g426/AccurateOrdnance/Firearm%20Components/barrels_04_caLarge.jpg

http://i1101.photobucket.com/albums/g426/AccurateOrdnance/Firearm%20Components/barrels_02_caLarge.jpg

http://i1101.photobucket.com/albums/g426/AccurateOrdnance/Firearm%20Components/barrels_01_caLarge.jpg

Edit to add: I am pretty certain the #4 contour is a Brux but I grabbed all Rock Creek barrels for the other ones. Each barrel manufacturer has similar but potentially slightly different contours and/or naming conventions. For example, a Broughton #5.75 is pretty close to a Rock Creek "Sendero". When barrel shopping you need to look at different manufacturers' contour specs to really compare things or talk to a 'smith who knows the contours pretty well and they can help you pick a contour bases on what you want to do with the rifle. The one caution though is that when you call and say, "I want a M24 contour" I think a lot of builders assume you know exactly what you are talking about and they just take the order. Lots of guys want heavier barrels so if you go into the communication process with your builder sounding confident in your component selection, you might not be questioned. Make sense? That sounds a little like what happened to the OP here and that is unfortunate. Don't be afraid to ask questions.


Mark


On defense of my builder, I purchased the barrel prior to deciding to use him as my builder. I sent him all my parts, including the barrel to get worked on. I based my purchase on reviews and other people's choices to opt for the large diameter barrel. I knew thebarrel was heavy, but unestimated the weight of the rifle when the weight is mostly hanging on the other end of the stock. This was my first centerfire build and at least I got a learning experience from it. Heavy contours are not for a small build person like myself if you have intentions of more than just prone or bench shooting. In hindsight, I should have done more research on multi purpose rifles rather than just precision builds.
BookHound
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Posted: 7/2/2012 7:33:11 PM
Originally Posted By jtdam24:


This is great. Where do the AMU/MTU, and palma profiles fit in?


The MTU contours are slightly larger than the M24. They are HEAVY for sure.

Which palmas? For example, a Brux #14 Medium Palma isn't too far off from a Remington Varmint.

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jtdam24
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Posted: 7/2/2012 8:05:05 PM
Is the MTU contour the heaviest you can get?
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BookHound
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Posted: 7/2/2012 8:42:16 PM
You could always get a straight blank with no contour. Can't see what it would gain though.
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jtdam24
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Posted: 7/2/2012 8:57:09 PM
Originally Posted By BookHound:
You could always get a straight blank with no contour. Can't see what it would gain though.


I'm planning on sourcing parts for an upcoming build and a far as bolt guns go I'm pretty much a layman. Trying to learn the different profiles from light to heavy
Jack Burton: This is gonna take crackerjack timing, Wang.
BookHound
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Posted: 7/3/2012 7:17:20 AM
Originally Posted By jtdam24:
Originally Posted By BookHound:
You could always get a straight blank with no contour. Can't see what it would gain though.


I'm planning on sourcing parts for an upcoming build and a far as bolt guns go I'm pretty much a layman. Trying to learn the different profiles from light to heavy


What are the primary intended purposes of the rifle? What caliber?
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jtdam24
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Posted: 7/3/2012 9:41:37 AM
Originally Posted By BookHound:
Originally Posted By jtdam24:
Originally Posted By BookHound:
You could always get a straight blank with no contour. Can't see what it would gain though.


I'm planning on sourcing parts for an upcoming build and a far as bolt guns go I'm pretty much a layman. Trying to learn the different profiles from light to heavy


What are the primary intended purposes of the rifle? What caliber?


Caliber is .338 LM. Built on a surgeon XL action. Just some range fun, possibly some competitions.
Jack Burton: This is gonna take crackerjack timing, Wang.
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