Support The Forums:

The forums have been hosted for some time now out of my pocket. We are coming up on the annual domain renewal for ohioccwforums.org and I pay roughly $20/month to keep the forums online. I do this to maintain the long-standing history of discussions here indexed in Google, and so that people have a place to discuss this topic outside of modern social media censorship. If you enjoy the forums and you'd like to help offset the cost, please consider a venmo donation here

223 Remington and 556 NATO

This is where you can talk about all equipment issues; firearms, ammunition, magazines, care & repair, holsters, gun cases, etc.

Moderators: Chuck, Mustang380gal, Coordinators, Moderators

Post Reply
ryuzwajr
Posts: 75
Joined: Fri Jun 06, 2008 9:46 am
Location: NE Ohio

223 Remington and 556 NATO

Post by ryuzwajr »

I have 2 AR - both have 556 on them

I have been shooting 223 Remington in them
Am I causing damage?

Let me know

Thanks in advance
User avatar
Sevens
OFCC Patron Member
OFCC Patron Member
Posts: 7531
Joined: Thu May 07, 2009 8:30 am
Location: Far East Side of CBus

Re: 223 Remington and 556 NATO

Post by Sevens »

Zero.

Shooting some 5.56 in .223 Rem marked guns can lead to high pressure situations.

What you’re doing is 100% good to go.
I like to swap brass... and I'm looking for .32 H&R Mag, .327 Fed Mag, .380 Auto and 10mm. If you have some and would like to swap for something else, send me a note!
User avatar
jeep45238
Posts: 5930
Joined: Sun Feb 18, 2007 10:29 am
Location: SW Ohio
Contact:

Re: 223 Remington and 556 NATO

Post by jeep45238 »

Brass is identical in dimensions, and the pressure difference is due to a difference in measurement (peak versus average).

The difference comes to the lead and throat dimensions of the chamber cut. Assuming you're buying cheap 55 grain stuff, you'll have zero issues. If you're putting 77 grain 5.56 in your .223, I'd expect an issue to crop up eventually.
http://shootingfordollars.org Where Firearms and Finances meet.

You can't truly call yourself peaceful unless you are capable of great violence. If you're not capable of violence, you're not peaceful, you're harmless.
-Important distinction
Post Reply