Home AR-15 223 -vs- 5.56: FACTS and MYTHS

223 -vs- 5.56: FACTS and MYTHS

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Full Story:
Here it is! Essential facts and common misconceptions related to both 223/5.56 ammunition, as well as 223/5.56 rifles. Don’t forget to check out the full write-up! (see link above).

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42 COMMENTS

  1. The .223 Wylde hybrid chamber was designed by Bill Wylde of Greenup, IL to exploit the accuracy advantages of the .223 Remington chambering without pressure problems or compromising the functional reliability of (semi) automatic weapons like the AR-15 family when using 5.56×45mm NATO military ammunition.[2] Coincidentally, it shoots the relatively long and heavy 80-grain (5.18 g) bullets commonly used in the sport of High Power Rifle Competition very well and is one of the preferred chambers for that use. The Wylde chamber is used by a few rifle manufacturers who sell "National Match" configuration AR-15 rifles, barrels, and upper receivers.So for accuracy in both types make sure you have a genuine Wylde barrel I have in my AR15 build tho My Preference In hunting Predators and deer is the Win 243 and the famous Rem 22.250 ,and defense is 76.51/308 win.

  2. The only firearm that you are supposed to shoot 5.56 ammunition in is a firearm that is specifically chambered for 5.56. You are never supposed to shoot 5.56 in a firearm that is chambered for .223. But you can shoot .223 in a firearm that is chambered for 5.56.

  3. I have zero idea of why you have to do ANYTHING with the .556 primer pocket for reloading. Of course it needs to be cleaned and sized, but exactly why do you have to remove the pocket rim???

  4. Need some information, getting ready to cut down some brass for making 300 BLK, which would be better, .223 or 5.56? Watch you all the time and enjoy grabbing some knowledge. Thanks Dave

  5. It was a lot simpler back in the day. Not a lot to choose from but they all killed deer. My favorite cal now? .270 of course
    Times changes everything. Much respect for making these videos so us old farts can kind of know some facts. 👍

  6. A simple comparison could be made in the fact that Ford rims "will fit" a Dodge wheel end, and vice versa. The problem is they are just far enough apart to ruin the lug studs AND the wheel, and throw the wheel into the middle of the road. Bad things happens either way.

  7. For the people who dont want to watch this dry ass video… yes… if you buy a AR15 that has a 5.56 barrel… you can shoot .223 ammo… you're welcome… don't do the reverse tho… might work but you might die lmao… be safe kids….

  8. Okay, don't try to short change us. THIS VIDEO IS INCOMPLETE. With what was addressed supposedly done (when pigs fly), now you should address the psychological and sociological facts and myths associated with this ammunition. Is one military, thus should be banned? So much to be discussed. So many more videos.

  9. Gun stores selling ammo will tell people they are exactly to same, which is untrue. Having been in the military, I can tell you 223 Remington does not load as reliably as 5.56 NATO. But I’ve only encountered it in full auto. Bottom line, you should use whatever ammo the manufacturer states. 😊

  10. Of course a military chamber is ever so slightly larger — you can’t afford for slightly out of tolerance ammunition taking your gun out of commission by getting stuck!
    Any knucklehead who shoots tracers through their rifle is destroying their barrel, so why is that even a part of a sporting conversation?
    I’ve been shooting 5.56 ammunition out of .223 chambers for well over 40 years. I’ve never seen any indications of excessive pressures (with factory ammunition or my own reloads). You point out yourself that the differences in how the pressures are specified and measured make them nearly equivalent. I think the entire argument is nonsense.

  11. I shot 5.56 many times SS109 in a Mini 14. Mini 14 was some older commeorative thing made in 200th yr of liberty. This was in Australia in early 1990s when we still could own Semis. I ran Nirinco 5.56 and 223 as well as Australian made SS109. Got the odd round caught ejecting, but same same using actual Remington 223.
    This topic has ALWAYS had heaps of conflicting advice even 7.62×51 v 308. Same ran Singaporen Australia Chzekoslavakian Egytian god knows what 7.62 in a Norinco 308 a Valmet 308. I guess I seen over a million rd of both calibres shot over several yrs, only ever saw 1 rifle explode.
    And that was a 30.06 FN 49 with a 8mm mixed up. Impressive ripped half the stock of straps bent but action remained mostly intact no injury.

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