The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > Handloading, Reloading, and Bullet Casting

Reply
 
Thread Tools
Old November 8, 2013, 12:25 AM   #1
TheDutchman19
Senior Member
 
Join Date: August 30, 2012
Location: So Cal
Posts: 105
6.5mm/08 AI verse 260 AI

What, if any, is the differences between these two cartridges? It has been a little challenging finding info on them as well.
TheDutchman19 is offline  
Old November 8, 2013, 07:20 AM   #2
Bart B.
Senior Member
 
Join Date: February 15, 2009
Posts: 4,465
Name only if the AI part is the same.

.260 cases are a bit longer than 6.5x.308 and that may be an issue depending on who makes the chamber reamer.
__________________
US Navy Distinguished Marksman Badge 153
Former US Navy & Palma Rifle Team Member
NRA High Power Master & Long Range High Master
NRA Smallbore Prone Master

Last edited by Bart B.; November 8, 2013 at 07:38 AM.
Bart B. is offline  
Old November 8, 2013, 08:25 AM   #3
TheDutchman19
Senior Member
 
Join Date: August 30, 2012
Location: So Cal
Posts: 105
Bart

If you had to choose one, is there a preference?
TheDutchman19 is offline  
Old November 8, 2013, 10:50 AM   #4
old roper
Senior Member
 
Join Date: June 11, 2007
Posts: 1,054
The 260 case since your not having to neck down from the 308 is little easier and if you got in a bind if 260AI is headspace right you can fire factory ammo in the 260AI chamber.

http://www.mansonreamers.com/Instruc...y%20Gaging.pdf

I've always build my Ackleys using the parent case and I like to use new brass so I've got pretty good history from the start.

Well good luck
__________________
Semper Fi
Vietnam
VFW
old roper is offline  
Old November 8, 2013, 11:01 AM   #5
TheDutchman19
Senior Member
 
Join Date: August 30, 2012
Location: So Cal
Posts: 105
Great input. That's what I was hoping for.

Other than the actual shot going through the barrel, is there any other down side to fire forming my cases in my Match grade barrel?
TheDutchman19 is offline  
Old November 8, 2013, 12:51 PM   #6
Bart B.
Senior Member
 
Join Date: February 15, 2009
Posts: 4,465
I'd stick with either original. AI'd cases have less barrel life than originals and the small velocity increase with the same pressure levels isn't worth a shorter barrel life.

260 Rem gets about 2000 rounds of best accuracy from the best barrels. AI versions can reduce that by 30% or more.

Fire forming cases wears out barrels just like normal loads of the same type.
__________________
US Navy Distinguished Marksman Badge 153
Former US Navy & Palma Rifle Team Member
NRA High Power Master & Long Range High Master
NRA Smallbore Prone Master

Last edited by Bart B.; November 8, 2013 at 01:06 PM.
Bart B. is offline  
Old November 8, 2013, 03:47 PM   #7
old roper
Senior Member
 
Join Date: June 11, 2007
Posts: 1,054
The 260,7-08,243 and 308 all have the same headspace.

Two way to fireform. You can fireform with standard load for the 260 which can be just the start load or you can use COW method 12/13gr Bulleye and filler hold the muzzle up and that fireform your case.

Since I can reload at the range also if I can get 10 Ackley cases I can reload those 5/6 times for load development and sometime you may get above max velocity with a max load.

I've never build a 260AI but I did look at it along with the 6.5x55AI but I opt for the 6.5x284 Norma. I'm shooting 243AI,35 WhelenAI,222AI,223AI and the SAAMI spec 280AI also shooting customs in 222,223 and 243.

I rebarrel when accuracy drops off and I've never found the Ackley wear a barrel out faster. My 280AI was a factory 280 and I shot a Kreiger barrel 35 Whelen and later rebarrel that to the 35 WhelenAI.

I like shooting the Ackleys.
__________________
Semper Fi
Vietnam
VFW
old roper is offline  
Reply

Thread Tools

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 -5. The time now is 11:11 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.07118 seconds with 7 queries