Sub-Sonic Ammo 223

**bodhi_** · 13-06-2019, 15:37

Hi,

How do i recognize which 223 ammo is sub-sonic. Using Google-Fu it comes with American sites which are not very helpful.

**Theron2033** · 13-06-2019, 15:59

Subsonic 223 is basically 22LR. It'll never cycle anything either. Rather stick to 22LR or 300blk. Or even 7.62x39.

**StanCT** · 13-06-2019, 16:30

The .223 caliber does not really lend itself easily to subsonic applications.

This has been discussed in-depth in at least one other thread somewhere on the forum.

**treeman** · 13-06-2019, 17:26

I would think it would state VERY clearly on box.

**treeman** · 13-06-2019, 20:21

Originally Posted by treeman

I would think it would state VERY clearly on box.

.....Was not being sarcastic, I googled 223 subsonic and all the factory ammo states label size, SUBSONIC 223 Rem

**Finkelstein** · 13-06-2019, 22:15

http://www.gunsite.co.za/forums/show...-loads-for-223

**treeman** · 14-06-2019, 07:50

I play a lot with reloading, kinda "win stupid prizes guy", I would not bother with trying to make my own Sub Sonic 223. Too big a case too small light a bullet. 1 gr is a large % of load kinda case. Call me scared, but .................

**MFouche94** · 15-06-2019, 16:53

This video features 223 subsonic load development. Clearly developing a subsonic 223 load is possible. Forget about these rounds cycling a semi-auto, though.

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**AK-Gunner** · 15-06-2019, 20:58

Why subsonic .223? Because it is silent with a proper suppressor and sometimes you want to be silent, but don't have the luxury of having multiple weapons available during a mission.

Originally Posted by treeman

Too big a case too small light a bullet.

Yes it it. There's a documented(?) possibility of a detonation with a too small amount of powder in relation to the case capacity, but I've seen special cases made for subsonic 5.56x45 applications with long and "heavy" bullets. If a 5.56 can ever be called heavy...

But really, if rifle ammo is loaded subsonic, it's printed very clearly to the ammo box.

**Trundle** · 16-06-2019, 10:49

I currently run 55gr Hornady V-Max through my CQ-A with a Mkonto QD silencer.

It's not sub-sonic and on a quiet night you can clearly hear the shots from about 800m away. They sound like a low-std velocity .22

The CQ-A cycles reliably, but it's definitely not subsonic, and not uncomfortable without ear-pro.