Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels and Ballistics


Reply

Setting Headspace for 260 Rem. AI

 
LinkBack Thread Tools Display Modes
  #1  
Old 02-01-2012, 06:04 PM
Silver Member
 
Join Date: Oct 2010
Location: Texas
Posts: 285
Setting Headspace for 260 Rem. AI

Can I set the headspace on a Savage action and a 260AI barrel using a standard 260REM, 7mm-08, 243, etc. GO Gauge? The datum line should be the same right? If not, does anyone make an AI version of a Go Gauge?

Thanks,

Dave
__________________
"Be not ye afraid of them: remember the LORD, which is great and terrible, and fight for your brethren, your sons, and your daughters, your wives, and your houses." Nehemiah 4:14
Reply With Quote
  #2  
Old 02-01-2012, 07:18 PM
Platinum Member
 
Join Date: Jan 2005
Location: OK
Posts: 2,145
Re: Setting Headspace for 260 Rem. AI

NO,


PTG makes a gauge for AI, it's aprox .003-.004" shorter than the go gauge for a standard 260.

I would do this; start with new brass from the same lot, Run it all thru your 260 or 260 ai die to round out the necks, headspace the barrel with the brass so that when you close the bolt (with FP removed) you feel a slight resistance, this is called a crush fit and insures that when fireforming you form the shoulder with-out stretching the web.

If all that sounds greek to you, your probably not ready for an AI.
Reply With Quote
  #3  
Old 02-01-2012, 07:37 PM
Platinum Member
 
Join Date: Jan 2011
Posts: 2,099
Re: Setting Headspace for 260 Rem. AI

Actually you can use a standard 260 go gauge but you use the go gauge as a no go gauge and that gives you the .004" you need to push back against neck/shoulder junction.
Reply With Quote
  #4  
Old 02-01-2012, 08:56 PM
Platinum Member
 
Join Date: Jan 2005
Location: OK
Posts: 2,145
Re: Setting Headspace for 260 Rem. AI

How exactly is he to determine what .004 under go is?

The bolt won't close on the go. so at what point of screwing the barrel into the reciever does he determine he is .004" under the go?


Best to give your brass a slight crush fit.
Reply With Quote
  #5  
Old 02-01-2012, 09:55 PM
Platinum Member
 
Join Date: Jan 2011
Posts: 2,099
Re: Setting Headspace for 260 Rem. AI

He is to snug the barrel down on the go gauge until it has heavy drag and almost won't let the bolt close, there is normally only .003-.004" difference between a go and no go, I have done this, I know it works!
Reply With Quote
  #6  
Old 02-02-2012, 08:30 AM
Platinum Member
 
Join Date: Jan 2005
Location: OK
Posts: 2,145
Re: Setting Headspace for 260 Rem. AI

sorry Backwoods I can see that your much more knowledgable than me when it comes to the PROPER way to headspace a barrel and get the desired results,
Reply With Quote
  #7  
Old 02-02-2012, 01:54 PM
Platinum Member
 
Join Date: Jan 2011
Posts: 2,099
Re: Setting Headspace for 260 Rem. AI

Hey coyboy, if you wasn't such a wise ***** you would actually read what I said and realize that it gives you the same "crush fit" that you speak of, only using a gauge and not a piece of brass, it can be done with any of the ackley cartridges that have not been modified from the original PO Ackley design.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Setting Headspace for 260 Rem. AI
Thread Thread Starter Forum Replies Last Post
7mm rem mag headspace JPhelps Reloading 10 02-06-2012 02:13 PM
Setting up a 300 RUM Ceilingman Equipment Discussions 2 01-22-2012 07:37 PM
300 RUM Headspace ? Moman Reloading 2 01-07-2010 11:46 PM
headspace problems Dave Schenck Long Range Hunting & Shooting 5 08-04-2009 01:48 PM
Headspace dwm Long Range Hunting & Shooting 3 08-19-2003 06:51 PM

Current Poll
In the last 12 months, what was your longest rifle kill on big game?
0 to 200 yards - 25.94%
1,527 Vote
201 to 400 yards - 32.14%
1,892 Vote
401 to 600 yards - 23.07%
1,358 Vote
601 to 800 yards - 10.01%
589 Votes
801 to 1,000 yards - 3.91%
230 Votes
Over 1,000 yards - 4.93%
290 Votes
Total Votes: 5,886
You may not vote on this poll.

All times are GMT -5. The time now is 04:03 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC