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Will this work in 223? — 10 Answers

by Tex, from NC, United States Asked on June 15, 2021

Name Winchester USA VALOR 5.56x45mm NATO 62 grain Green Tip (M855) Full Metal Jacket Boat Tail (FMJBT) Brass Centerfire Rifle Ammunition (4.5)
$87.09 $75.19 Save 14%
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Answered by Gary Esser, member, from WI, United States, on July 20, 2021

No. 556 NATO has higher chamber pressure

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Answered by MD, member, from CA, United States, on October 15, 2021

223 WYLDE is certified to shoot 556 ammo.. standard 223 Remington barrels are not rested to handle the higher pressure of a 556 NATO round. 223 Wylde is 100% compatible with 556 ammo and many play with custom 556 loads for the "extra chamber pressure" which (they believe) makes a flatter flying round.

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Answered by FLpatriot863, member, from FL, United States, on July 07, 2021

Negative. A weapon chambered in 5.56 can also shoot .223. However, a weapon chambered in .223 can not shoot 5.56

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Answered by John Rifleman, member, from KY, United States, on August 23, 2022

yes you can it's perfectly save the gun won't explode.
for liability reasons it's not recommended.

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Answered by Steve H, member, from CA, United States, on September 25, 2021

NEVER shoot a 5.56 round in a .223 chambered gun. However, you can go the other way. If you have a 5.56 chambered gun, you can shoot 5.56 AND/OR .223 ammo.

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Answered by Ravi, guest, from FL, United States, on July 20, 2021

No, 5.56 can only be used with a 5.56 barrel. Only .223 ammo can be used in both .223 and 5.56 barrels.

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Answered by Limo guy, guest, from PA, United States, on July 19, 2021

They will fit in a 223 caliber rifle but it is highly recommended that you don't use 556 NATO ammo!

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Answered by Kris, member, from WI, United States, on July 13, 2021

You can safely fire .223 in a 5.56 chamber, it is unsafe to fire 5.56 in a .223 chamber. SHORT ANSWER NO. Will it work, maybe, but you shouldn't unless you have a .223 wylde chamber.

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Answered by chris, member, from ME, United States, on July 08, 2021

If your rifle is chambered for .223 this will not work.

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Answered by jt, member, from GA, United States, on July 08, 2021

No it will not if the gun doesn’t say 556

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