Calguns.net  

Home My iTrader Join the NRA Donate to CGSSA Sponsors CGN Google Search
CA Semiauto Ban(AW)ID Flowchart CA Handgun Ban ID Flowchart CA Shotgun Ban ID Flowchart
Go Back   Calguns.net > INTERESTS AND ACTIVITIES > Gunsmithing & How To
Register FAQ Members List Calendar Mark Forums Read

Gunsmithing & How To Pro, Amateur & WECSOG and Tutorials, Guides & OLL Build Instructions

Reply
 
Thread Tools Display Modes
  #1  
Old 07-17-2011, 7:02 PM
swift swift is offline
Senior Member
 
Join Date: Feb 2006
Location: San Diego
Posts: 894
iTrader: 36 / 100%
Default 'trim' barrel throat

My 'blueprinted' R700 .308 target rifle still shoots 0.5 MOA groups (with handloads), but it almost closes on a field gauge. When I bought it ten years ago, the previous owner disclosed that the barrel would need work and priced the rifle accordingly. He suggested that it was pretty commonplace to have 0.5"-1" trimmed off each end of the barrel and then have it reinstalled. (The barrel currently is 23".) Any idea what this might cost? Can you recommend someone good in San Diego for this work?
Reply With Quote
  #2  
Old 07-17-2011, 7:04 PM
hylander's Avatar
hylander hylander is offline
Veteran Member
 
Join Date: Oct 2005
Location: Lincoln
Posts: 3,179
iTrader: 143 / 100%
Default

Just have your smith set the barrel back to set proper Headspace.
Easy job and inexpensive
__________________
Failure is not an Option
Reply With Quote
  #3  
Old 07-17-2011, 9:13 PM
kendog4570's Avatar
kendog4570 kendog4570 is offline
Veteran Member
 
Join Date: Dec 2008
Location: Oakhurst, CA
Posts: 4,304
iTrader: 30 / 100%
Default

Quote:
Originally Posted by hylander View Post
Just have your smith set the barrel back to set proper Headspace.
Easy job and inexpensive
Huh??
It takes almost as as much, or more, work to set one back to good throat material, than to fit a new blank.
Reply With Quote
  #4  
Old 07-17-2011, 7:28 PM
gunboat's Avatar
gunboat gunboat is offline
Veteran Member
 
Join Date: Apr 2008
Location: san josie now Dacula Ga.
Posts: 3,309
iTrader: 22 / 100%
Default

If it does not close on a field gage and you neck size only there should be no problem. In fact even if it closes on a field gage and you neck size ONLY it will still be ok. At least till you need to full length size the cases.
Not uncommon practice in years past to set back barrel a few thou , or a full thread if it has barrel mounted sights, and to recrown the muzzle.
Trimming an inch off comes from weapons that could not be breech cleaned and got muzzle wear.
my ha-penny
Reply With Quote
  #5  
Old 07-17-2011, 11:18 PM
Roccobro Roccobro is offline
Veteran Member
 
Join Date: Feb 2007
Location: By Cal State San Bernardino
Posts: 2,909
iTrader: 62 / 100%
Default

Quote:
Originally Posted by gunboat View Post
If it does not close on a field gage and you neck size only there should be no problem. In fact even if it closes on a field gage and you neck size ONLY it will still be ok. At least till you need to full length size the cases.
Not uncommon practice in years past to set back barrel a few thou , or a full thread if it has barrel mounted sights, and to recrown the muzzle.
Trimming an inch off comes from weapons that could not be breech cleaned and got muzzle wear.
my ha-penny
This is what I'm thinking. If you have the chamber reset, you'll not be able to use your previously reloaded match stuff if it's rifle specific.

Justin
__________________
[SIZE="4]For any questions contact me by email.
Thanks,
Justin[/SIZE]
Quote:
Originally Posted by ar15barrels View Post
Sometimes, arguing just for the sake of arguing, can be fun.
Quote:
Originally Posted by DannyZRC View Post
no it can't!
Quote:
Originally Posted by ar15barrels View Post
YES IT CAN!
"Pink rifle disease... SPREAD IT!"
Reply With Quote
  #6  
Old 07-18-2011, 7:47 PM
swift swift is offline
Senior Member
 
Join Date: Feb 2006
Location: San Diego
Posts: 894
iTrader: 36 / 100%
Default

The guy who sold me the rifle told me it had more than 10K thousand rounds down the barrel, so I guess I was lucky to get 2K more. I called around and 'setting back' a barrel isn't too expensive. (ca. $100)

Last edited by swift; 07-18-2011 at 7:53 PM..
Reply With Quote
  #7  
Old 07-18-2011, 8:51 PM
gunboat's Avatar
gunboat gunboat is offline
Veteran Member
 
Join Date: Apr 2008
Location: san josie now Dacula Ga.
Posts: 3,309
iTrader: 22 / 100%
Default

With 10k down the tube, I would certainly consider a rebarrel - If a short chambered barrel is available the labor cost would be about the same.
Reply With Quote
  #8  
Old 07-20-2011, 8:54 PM
kendog4570's Avatar
kendog4570 kendog4570 is offline
Veteran Member
 
Join Date: Dec 2008
Location: Oakhurst, CA
Posts: 4,304
iTrader: 30 / 100%
Default

Sorry fellas, to just "set it back" for $100 is false economy. Especially at the 10K round count.

If you are going to get to good throat material after that many rounds, you will significantly shorten the barrel, and also, the work to do all that is just as involved with set-up as fitting from a blank. Picking up an existing thread is more time consuming that cutting new ones. Cut enough off to cut new ones, and you will be taking a bunch off the barrel. You will most likely end up with a slightly set-back barrel that doesnt shoot any better than before, or a snub-nosed 308 (or whatever caliber you are working with). If your smith is just going to set it back without taking all these things into consideration, well, maybe you should look for another one.
High power shooters used to have them set back a thread or so, after firing a relatively few rounds, to get the finest accuracy during the service life of the barrel. This is relativey simple for the gun plumber. A little off the back and a little off the torque shoulder. Works good on a push-feed Winchester. If he has to add/splice into existing threads(to keep the barrel as long as he can), or re-cut the Remington counterbore, the labor is darn near the same as fitting a new one.
Reply With Quote
  #9  
Old 07-21-2011, 7:36 PM
swift swift is offline
Senior Member
 
Join Date: Feb 2006
Location: San Diego
Posts: 894
iTrader: 36 / 100%
Default

I'm looking at getting a new barrel. Now I'm looking at the other extreme, wondering if I should get Shilen's less expensive SS .308 barrel.

http://www.shilen.com/pricesServices.html

$700 installed...ouch

Do you have more cost-effective suggestions. I'm not a competitive shooter, but I do like accurate rifles. If the price difference between SS and chrome moly is only $100, I'll get the SS.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT -8. The time now is 10:55 PM.




Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Proudly hosted by GeoVario the Premier 2A host.
Calguns.net, the 'Calguns' name and all associated variants and logos are ® Trademark and © Copyright 2002-2018, Calguns.net an Incorporated Company All Rights Reserved.
Calguns.net and The Calguns Foundation have no affiliation and are in no way related to each other.
All opinions, statements and remarks made by Calguns.net on this web site and elsewhere are solely attributable to Calguns.net.