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Posted: 6/1/2009 4:19:26 PM EDT
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I'm looking for a cite-able source for examples of a .223 chambered / barreled rifle exploding using 5.56.
I have plenty of content explaining the differences but nothing depicting the results. Most internet searching leads back to a couple of same sources for explaining the differences. It's for a college class so it needs to be from a source I can cite. Thanks. |
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I believe that's more of a rumored issue than it ever happening but I'm pretty sure the controversy is mostly concerning Failure To Ejects being the main problem due to the oversized / slightly larger 5.56 getting stuck in a .223 chamber- even noticeable on bolt guns as you're chambering / and after fire.
And you can site me from this site- you're bound to get an A w/ my advice. 
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| I don't know about exploding, but many moons ago I tried firing some SS109 through my Rem 700 VS. First indication should have been how hard it was to close the bolt. When I pulled the trigger it went BANG, and a hot blast of gas flowed through the bolt into my face. The firing pin had punctured the primer, allowing gas to flow through the bolt. Scared the hell out me. |
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You should contact the people responsible for the SAAMI specifications. They are the ones that put out the warning about the hotter 5.56.
SAAMI organization Their home page will tell you everything about them, and there is a link to "unsafe firearms and ammunition combinations" on the home page. |
| I had the same question and found the answer on Bushmaster's website. The 5.56 generates more pressure than the .223 because of a difference in the neck. A barrel marked 5.56 can shoot both, but one marked .223 can not handle the pressure a 5.56 makes and is only to shoot .223. It is just what I read and not what I said. |
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I'd have a VERY hard time believing that this could cause a Kabizzle. Popped primers and other issues? Yeah. But a gun blowing up? I doubt it. Join me then, won't you, in questioning the newbies (and others) whose generic response to "Shoot 5.56 in a .223 chamber?" question is "YOU'LL BLOW YER GUN UP!!!" Maybe you can add a "Jethro!!" to the end. What you said above is what I always say - popped primers and extraction issues, maybe. Blowing your gun up? No. *This is NOT me saying that you should shoot .223 in 5.56 chambers; IMO, the possibility of popping primers is enough of a reason not to, because those little buggers can get into bad places. But let's have a little intellectual honesty in the discussion. |
| I understand the facts; I'm just curious why ANYONE would manufacture a .223 barrell for the AR platform, given that a 5.56 will handle any ammo thrown at it. I would think that any manufacturer using a .223 barrel would face extreme liability. It's not like it's cheaper or anything. Not meaning to hijack the thread, just curious. |
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I understand the facts; I'm just curious why ANYONE would manufacture a .223 barrell for the AR platform, given that a 5.56 will handle any ammo thrown at it. I would think that any manufacturer using a .223 barrel would face extreme liability. It's not like it's cheaper or anything. Not meaning to hijack the thread, just curious. Theoretically, better accuracy. That's why these days you predominantly find .223 barrels on varmint guns. |
People, seriously, read through the Ammo Oracle. All the answers are there...
...end discussion. |
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This is one of the bigger urban legends gun myths out there. It is possible to cause a KB, but far from guaranteed. I've fired M193 (yes, the real stuff), XM193, S&B SS109, Hirt 5.56, and Swiss GP90 through a Compass Lake 'match chambered' .223 SAAMI spec barrel with absoutly no pressure issues what so ever. Average temps were in the mid 60's to low 70's. It is unlikely that you will find any hard evidence to support your paper.
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appreciate the replies, and I have already read the ammo oracle and saami
what I'm looking for is instances where it's actually happened, the barrel actually did blow apart. I was already thinking the most likely bad outcome would be a very jammed case. I've done a lot of searching and can't find any documented instances of it actually blowing up thanks |
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People, seriously, read through the Ammo Oracle. All the answers are there...
...end discussion. man you FL guys 
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Ive shot a shit load of Q3131 in a savage 223rem bolt action Q3131 is a bit cooler and slower for a true M193 5.56mm round. Try that with some Fed XM193 and see what happens...popped primers for sure. NOT ALLWAYS TRUE !! LOTS VARY ALL THE TIME I have a LOT of Q3131 from 1999 Is every bit as hot if not HOTTER Bought my First case of XM193 in 2001 when ever the stuff came out! when did you buy yours now? Have 2 bandoliers of it left Hell I have SS109 thatsa tad hotter than M855 specs Ive seen RAD WAY a tad hotter than M855 specs accuracy is what really matters AND like I stated Ive shot Q3131 in the 223 savage back in the 80`s Q3131 isnt 223rem back in 2001 I was bored just wanted to screw around and compare Q3131A to my old stand by Q3131 dillon scale q3131 26.2 rs. q3131a 25.8grs 9-89 IMG m193 25grs SA m193 26.2 1998 Police trade in LCM855 and 1993 Santa Barbra SS109 had the same 26.2grs. wich is odd so did SA and Q3131 M193/5.56mm But still dont matter if ya dont know what type of ball powder SA uses or IMG maybe WC844 who knows Ive also shot IMI M193 PMC M193 out of the savage wish for more PMC M193 & IMI what ever was Cheap |
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I've shot a shit load of Q3131 in a savage 223rem bolt action Post-Vietnam there was tons of cheap USGI ammo floating around and it was the primary ammo for shooting to get the cases for reloading. Ran thousands of rounds through a Rem 700 and Rem 788 without a hitch or indication of pressure issues. It's why I hate processing military brass and will pay the extra bucks for commercial. Because of the lack of issues with the Remingtons and USGI I really wasn't aware of any "controversy" of 5.56 v .233 until recent years. |
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I've shot a shit load of Q3131 in a savage 223rem bolt action Post-Vietnam there was tons of cheap USGI ammo floating around and it was the primary ammo for shooting to get the cases for reloading. Ran thousands of rounds through a Rem 700 and Rem 788 without a hitch or indication of pressure issues. It's why I hate processing military brass and will pay the extra bucks for commercial. Because of the lack of issues with the Remingtons and USGI I really wasn't aware of any "controversy" of 5.56 v .233 until recent years. Thanks ya I didnt have any problems If ya reload Some here should KNOW The DIE is in 223rem and can use LC brass or MOST any 5.56mm Nrass primmers are a bitch they are crimp compared to 223rem brass I did run into a problem buying CANADIAN SS109 back in the MID/LATE 80`s VERY GOOD AMMO But had a 1/14 twist in one of my rifles LOVE the Thermold stippers and Thermold Loaders Lots better than USGI spoon/strippers |
I should have clarified the reason I hate GI brass is all those crimps I removed by hand. But back then I had a lot more time than money.  Had my share of ruined primers from crimps that were not removed quite good enough.
After watching Black Hills' machinery make those crimps disappear I decided that machines were the way to go; better yet, let BHA process the brass. FWIW this was in the very early 80's when Jeff was getting started. |
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I understand the facts; I'm just curious why ANYONE would manufacture a .223 barrell for the AR platform, given that a 5.56 will handle any ammo thrown at it. I would think that any manufacturer using a .223 barrel would face extreme liability. It's not like it's cheaper or anything. Not meaning to hijack the thread, just curious. Match barrels are generally .223 as they are supposedly more accurate when paired with the right shooter, ammo, and trigger. |
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