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#5649608 - 03/13/15 10:16 AM Barrel life?
GLC Offline


Registered: 02/25/09
Posts: 4116
Loc: Burleson Texas
So I am new to this and may be a silly question. As far as barrel life goes, looking at twist, feet per second and grain weight, barrel decays faster with heavy bullets at a fast twist rate? Fast twist rate with fast feet per second? Light grain bullets with fast feet per second? And or a combination of a bunch of things?
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#5649622 - 03/13/15 10:21 AM Re: Barrel life? [Re: GLC]
Bullfrog Offline
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Registered: 01/21/11
Posts: 10596
Loc: N-Bedford
Velocity is that fancy word. I used to worry about this too based on what people said. I still haven't seen a barrel get burned up. You looking to build one or something?
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#5649642 - 03/13/15 10:33 AM Re: Barrel life? [Re: GLC]
BOBO the Clown Offline
decoy

Registered: 04/19/07
Posts: 41089
Loc: Metroplex
Pressure is the real killer.

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#5649683 - 03/13/15 11:00 AM Re: Barrel life? [Re: Bullfrog]
GLC Offline


Registered: 02/25/09
Posts: 4116
Loc: Burleson Texas
Originally Posted By: Bullfrog
Velocity is that fancy word. I used to worry about this too based on what people said. I still haven't seen a barrel get burned up. You looking to build one or something?

Yep, have built two. One is a 300 win mag with a 1 in 10 twist and a 7mm08 with a 1 in 9 twist. Just wondering what is worse to degrade barrel life. Hot loads, heavy grain bullets vs light bullets, etc.
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#5649707 - 03/13/15 11:15 AM Re: Barrel life? [Re: GLC]
kmon1 Offline
junior

Registered: 09/27/06
Posts: 20289
Loc: Texas
Pressure. Something that burns out a lot of barrels is getting them too hot and not letting them cool.
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#5649891 - 03/13/15 01:18 PM Re: Barrel life? [Re: kmon1]
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Originally Posted By: Bullfrog
Velocity is that fancy word. I used to worry about this too based on what people said. I still haven't seen a barrel get burned up.


I've had two get shot out now. And am working on number three.

Originally Posted By: kmon1
Pressure. Something that burns out a lot of barrels is getting them too hot and not letting them cool.


I agree. And it many cases that goes hand in hand with velocity. 1500 rounds is all my last 22-250 barrel made it. An MV of 3750 fps with 55 gr. bullets will do that.

Run 130's in a 6.5 mm at 2900 fps or more and your barrel will not last as long as running 140's around 2780 fps.

However, my 7mm-08 should, by all acounts, last longet than my 6.5mm yet I am loading it above book max. It's not breaking any velocity records, because of a 20" barrel.

.308 Winchesters last stupid long time. Big ole bullet, not very fast, and not a skinny bore.
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#5649961 - 03/13/15 02:17 PM Re: Barrel life? [Re: GLC]
Judd Online   content


Registered: 01/22/09
Posts: 10757
Loc: Sachse, TX
Agree with what has been said regarding pressure. Velocity plays a role in that but take the 6.5SAUM that is fast by most accounts and it has good barrel life because H1000 is a low pressure low temp powder it can go a long time without being burnt up.

Also, if you are going to shoot often and a lot of volume you need to view a barrel as a disposable piece of the pie...much like bullets/powder/primers. Buddy of mine once told me "they make barrels while we are sleeping at nite, why worry how long it will last?"

He's right and like JG...I've burnt two and have one in the safe that is real close and another that I think was trash to begin with...I'm still proving that though.

Also, keep in mind it's a trade off...there are only two things that beat the wind...BC and velocity.
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#5649968 - 03/13/15 02:23 PM Re: Barrel life? [Re: FiremanJG]
Cleric Offline
Veteran Tracker

Registered: 03/11/12
Posts: 2579
Originally Posted By: FiremanJG

.308 Winchesters last stupid long time. Big ole bullet, not very fast, and not a skinny bore.


and thats why 308 is better than any of these fancy dance 6.5 stuff


There is no replacement for displacement



grin

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#5650007 - 03/13/15 02:49 PM Re: Barrel life? [Re: Judd]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Originally Posted By: Cleric
Originally Posted By: FiremanJG

.308 Winchesters last stupid long time. Big ole bullet, not very fast, and not a skinny bore.


and thats why 308 is better than any of these fancy dance 6.5 stuff


There is no replacement for displacement



grin


Aaaaaand, I refer to Judd's statement...


Originally Posted By: Judd

Also, keep in mind it's a trade off...there are only two things that beat the wind...BC and velocity.
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#5650183 - 03/13/15 04:59 PM Re: Barrel life? [Re: GLC]
Bullfrog Offline
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Registered: 01/21/11
Posts: 10596
Loc: N-Bedford
Fireman, I just haven't seen them! That's my fault because I haven't come out to visit you so you can show me and tell me all the crap I do wrong.

Won't be long and I'll have something to bring better than my 270. Can't wait to get mine.

Which reminds me.. . . Need to sell some stuff
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#5650210 - 03/13/15 05:16 PM Re: Barrel life? [Re: Cleric]
SingleShot85 Offline


Registered: 05/27/09
Posts: 1750
Loc: S.A. and Kinney Co.
Originally Posted By: Cleric
Originally Posted By: FiremanJG

.308 Winchesters last stupid long time. Big ole bullet, not very fast, and not a skinny bore.


and thats why 308 is better than any of these fancy dance 6.5 stuff


There is no replacement for displacement



grin



cheers up
I got 4K+ 175smk waiting to be deployed........ but as a good friend of mine says"barrels are like tires..."
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#5650351 - 03/13/15 07:03 PM Re: Barrel life? [Re: GLC]
Cleric Offline
Veteran Tracker

Registered: 03/11/12
Posts: 2579
I think 6.5 and 308 each have their place. Was being sarcastic...


I firmly believe that if you are going to shoot inside 500 yards and want to pull the trigger a lot the 308 makes sense

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#5650353 - 03/13/15 07:04 PM Re: Barrel life? [Re: Cleric]
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Originally Posted By: Cleric
I think 6.5 and 308 each have their place. Was being sarcastic...


I firmly believe that if you are going to shoot inside 500 yards and want to pull the trigger a lot the 308 makes sense


I know you were.


And I completely agree with you.
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#5650610 - 03/13/15 10:15 PM Re: Barrel life? [Re: FiremanJG]
kmon1 Offline
junior

Registered: 09/27/06
Posts: 20289
Loc: Texas
Originally Posted By: FiremanJG
Originally Posted By: Cleric
I think 6.5 and 308 each have their place. Was being sarcastic...


I firmly believe that if you are going to shoot inside 500 yards and want to pull the trigger a lot the 308 makes sense


I know you were.


And I completely agree with you.


Couple reasons I like the 6.5 Grendel, it pretty much mimics the 308 out to 500 yards or more and does it with less powder, lighter bullet with higher BC which both lead to less recoil. SAAMI Specs are for AR platform so max pressure is lower than a lot of other rounds making for long case and barrel life.
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#5650712 - 03/13/15 11:39 PM Re: Barrel life? [Re: GLC]
Bullfrog Offline
THF Celebrity

Registered: 01/21/11
Posts: 10596
Loc: N-Bedford
I'm so stinkin giddy about getting a 6.5, FINALLY!

Fireman, it won't be long and your phones gonna ring sir!
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