Gunsmithing Barrel Question for Gunsmiths

[Jedi]

doing a 18" x47
as my barrel required length is so short, thinking if i found a good name barrel with burnt out throat
26" or longer chop and rechamber etc would leave me with good un-torched rifling?
Correct me if i,m wrong but always thought most got messed up at the ends ie chamber and muzzle..middle should still be good??

Let me know what ya got laying around that might work and $$

 

[eddieharren]

Re: Barrel Question for Gunsmiths

Should be no problem. As long as the OD is large enough to provide a good shoulder. If the throat is shot out you may not have to set it back very far to get to "fresh meat".

 

[Jedi]

Re: Barrel Question for Gunsmiths

Thats what i was thinking but as i only need 18" finished length thinking it should work

Gotta be a lot of long 26"+ burnt out 6.5 barrels out there needing a new life

Hit me up

 

[Victor N TN]

Re: Barrel Question for Gunsmiths

Recutting a chamber doesn't need to take more than 3/8 to 1/2" if it's going into the same thread receiver. Before going through all the work you might want to do a good scrubbing and inspection of the barrel in question before doing the work. Ask someone with a borescope if you can check your barrel. If it has REALLY been shot a lot of high temp high pressure loads there may be what looks like "alligator skin". It can run from the throat several inches down the barrel. If that's the case you should move on to a different barrel. There are a lot of good used take off barrels to be had. Just make sure of what you have before buying and / or going through all the work.

Good luck.

 

[Hateca]

Re: Barrel Question for Gunsmiths

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Victor N TN</div><div class="ubbcode-body">Recutting a chamber doesn't need to take more than 3/8 to 1/2" if it's going into the same thread receiver. Before going through all the work you might want to do a good scrubbing and inspection of the barrel in question before doing the work. Ask someone with a borescope if you can check your barrel. If it has REALLY been shot a lot of high temp high pressure loads there may be what looks like "alligator skin". It can run from the throat several inches down the barrel. If that's the case you should move on to a different barrel. There are a lot of good used take off barrels to be had. Just make sure of what you have before buying and / or going through all the work.

Good luck. </div></div>

Exactly. Evidence of heat cracking, move on to the next barrel. Most of the time when the barrel is shot out I just recommend replacing it just for the cost effectiveness of it.

 

[Kogapsp]

Re: Barrel Question for Gunsmiths

Jedi,

I have several barrels that will meet your needs. I will bore scope it and find out where it needs to be cut.

kn

 

[Jedi]

Re: Barrel Question for Gunsmiths

Kool
Going chopped to 18"
So gotta be a heavy target type contour
Gotta have some meat for chamber area

Just to clarify going on Rem action
Looking for premium barrels not factory take off

Let me know what ya got bro
I just hate to buy a New @27" then chop off all that good steel.

May have to talk to Mike (rock) and see if he can help out
if not guess the stub would work as tomato stake/billy club

 

[300sniper]

Re: Barrel Question for Gunsmiths

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: HateCA</div><div class="ubbcode-body"> Most of the time when the barrel is shot out I just recommend replacing it just for the cost effectiveness of it. </div></div>

i'd agree with this. if you are doing the work your self and you don't place a value on your time, it may be worth messing with a "shot out" barrel. if you are paying someone to do the work, i don't think it would be worth the chance you take using someone else's used barrel.

 

[Kells81]

Re: Barrel Question for Gunsmiths

It might be that I am just tired, but if you WTB do you have a WTB add in the WTB section? Might get you a little further since you seem to have posted WTB in the Tech section. Again it miight be just cause I am kinda tired

 

[Jedi]

Re: Barrel Question for Gunsmiths

POKE
grab some java bro
This a seeking info kinda thread

Yes i also have a WTB for same

thou its looking like most just say buy new

 

[Greg Langelius *]

Re: Barrel Question for Gunsmiths

Victor;

Maybe a screwy question, but regarding the alligator skin, is it a matter of what you see is what you've got? I mean, is there reason to believe that where the alligatior skin ends, good barrel begins, or is there reason to mistrust the uncheckered porton of the bore any more than an uncheckered new bore?

I ask this because I've read that used bores develop a taper, wider at the chamber end, that acts as a choke and helps accuracy. I have no way to confirm this observation, and wonder whether there's something negative lurking beath that uncheckered used bore surface that might lead to my disappointment.

Greg

 

[Victor N TN]

Re: Barrel Question for Gunsmiths

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Greg Langelius *</div><div class="ubbcode-body">Victor;

Maybe a screwy question, but regarding the alligator skin, is it a matter of what you see is what you've got? I mean, is there reason to believe that where the alligatior skin ends, good barrel begins, or is there reason to mistrust the uncheckered porton of the bore any more than an uncheckered new bore?


Greg </div></div>

Greg,

As I have not read a complete research study on this subject, I can only pass along what I have been told. As Randy stated above the "alligator skin" is actually heat cracking. It is caused by the "flash" very high temps and pressure heating the inside surface of the barrel metal itself. Over sometimes years of these high temps and sometimes fired at a rapid pace the heat cracks do spread. Since the heat and pressures are highest in the first part of the barrel it will obviously start there. Usually in the throat area. But as the throat erodes the surface cracking will move forward. Not actually caused by the throat erosion. But rather both the throat erosion and the surface cracks are caused by the same heat and pressure that causes the bullet to travel down the barrel. The cracking will eventually lead to small sections of the surface flaking off. It may resemble flooring tile with random pieces ripped up every now and then. Only not so uniform of a shape.

In my way of thinking... and that's just what it is. If the barrel inside surface just ahead of the throat has started cracking, then the area ahead of that cracking has already been exposed to the same heat for maybe a lesser amount of time. If it were me I would and always have replaced the questionable barrel.

 

[Greg Langelius *]

Re: Barrel Question for Gunsmiths

Fair enough, and thanks for taking the time, Victor.

Greg

 

[oneeyedmac]

Re: Barrel Question for Gunsmiths

If someone has a particularly bad barrel or a shot out barrel they'd like to get rid of I'm looking for just such animals. I'm working on a little project for which I'm using pieces of a couple of brand new custom barrels, factory take off barrels, "shot out" or heavily used custome and factory barrels and hopefully some barrels that were awful from the beginning.

I'll pay for shipping from you to me if you've got something laying around. I have too many factory take off barrels already so I'm set there.

Thanks