Long Range Hunting Online Magazine


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


Reply

5.56x45 or .223rem?

 
LinkBack Thread Tools Display Modes
  #1  
Old 01-28-2011, 12:31 PM
Gold Member
 
Join Date: Sep 2010
Location: Coldwater michigan
Posts: 507
5.56x45 or .223rem?

I have a question about rifles in the .223 rem and the 5.56x45 NATO. Can they both be shot out of the same rifle? For example; Ar 15 chambered in the NATO round, can that fire the .223 rem also? Or vice versa? There is a question that a rifle chambered in one cannot shoot the other. If I remember correctly, a rifle chambered in 5.56 NATO can shoot both, but a rifle chambered in the .223 rem cannot shoot the NATO round. Just looking for clarification on this issue. Thanks for any help.

Meatyrem
Reply With Quote
  #2  
Old 01-28-2011, 02:57 PM
Platinum Member
 
Join Date: Jun 2010
Location: greenwood, IN
Posts: 3,543
Re: 5.56x45 or .223rem?

the rounds are the same (case), but the throats are slightly different. You'll see a very slight pressure spike (I mean very slight).
gary
Reply With Quote
  #3  
Old 01-29-2011, 12:06 AM
Gold Member
 
Join Date: Sep 2010
Location: Coldwater michigan
Posts: 507
Re: 5.56x45 or .223rem?

I was always on the assumption that either one can be fired through a rifle chambered in a 5.56 NATO. And either one can be fired through a rifle chambered in .223 rem. There is a fella that said one will fire both but not the other way around. So if there is a slight difference, then will it harm the rifle in any way? Or should it be avoided just to be safe?
Reply With Quote
  #4  
Old 01-29-2011, 11:13 AM
Platinum Member
 
Join Date: Jun 2010
Location: greenwood, IN
Posts: 3,543
Re: 5.56x45 or .223rem?

Quote:
Originally Posted by meatyrem View Post
I was always on the assumption that either one can be fired through a rifle chambered in a 5.56 NATO. And either one can be fired through a rifle chambered in .223 rem. There is a fella that said one will fire both but not the other way around. So if there is a slight difference, then will it harm the rifle in any way? Or should it be avoided just to be safe?
without chamber and throat drawings right in front of me, I can't exactly tell you the difference. But I do know it's in the length and angle of the throat. If I remember right the 5.56 is a few thousandths longer in the throat, but with a wider throat angle (I'm sure somebody will correct me). Sorta like a very short free bore. But the cartridge case and length are the same
gary
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: 5.56x45 or .223rem?
Thread Thread Starter Forum Replies Last Post
Tikka M55 in .223Rem. robbobsam Long Range Hunting & Shooting 0 05-27-2011 05:34 PM
WTS 5.56x45 brass (military) 1357MAG Reloading Equipment and Components 0 03-26-2010 06:00 PM
243wssm to 223rem possible? handle Gunsmithing 1 03-11-2010 10:01 AM
Bullet Weight for .223Rem with 1:12 twist trebark Rifles, Bullets, Barrels and Ballistics 3 06-08-2008 08:45 AM
64 win 223Rem Nomad Reloading 0 10-19-2007 06:46 AM

Current Poll
Where in the US do you live?
West of the Mississippi River - 60.70%
882 Votes
East of the Mississippi River - 37.03%
538 Votes
On the Mississippi River on a houseboat - 2.27%
33 Votes
Total Votes: 1,453
You may not vote on this poll.

All times are GMT -5. The time now is 10:00 AM.


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