Home Forums Hunting & Shooting AR and Tactical Rifles Subsonic loads ......

Which subsonic ammo are you using? The stuff I have tried won't cycle the action.



Travis

Remington Subsonic. CCI is better if you can find it.

Mine cycles fine. I hear a faint action noise, mostly the action closing as the synthetic bolt stop is pretty quiet.

Sometimes the bullet strike makes the most noise, as in hitting something hard.

DF

I have some of that. I'll try it out.

GFY.



Travis

What subsonic ammo were you using?

DF

The CCI 1050 stuff prefrag is just really accurate in my 10-22 kidd barrel.... should not have been a tightwad in ordering it... but figured wtf, a year later some more should have popped up somewhere.

I realize its not the top seller though... so it is what it is I guess.. pretty protective of what I have left... goes to killing only, not plinking..

Goign to get that bolt stop now for sure! Thanks for that info.

CCI Quiets.



Travis

That stuff won't cycle anything. It's not typical 22LR subsonic ammo, it's more like CB Long with a heavier bullet.

Lil'Gun may be part of your problem, besides which, it's not remotely one of the quietest powders to use for a bolt gun. It is about the quietest that will cycle most AR's. In a bolt gun, try one of the fast pistol powders; I use Bullseye but most anything at the fast end of the burn rate scale will work.

As a general rule of thumb, the faster powders are quieter.

Thanks for that, H110 is louder than Lil Gun with 240s by far, so maybe I'll have to go back and play a bit...
194s I don't see data on bullseye, but you have my attention by far..

Had heard lil gun was quieter than 1680... which is what it takes for an AR to function, which really isn't an issue anymore since Im' not so sure I'll ever put the rock AR barrel upper together...

Wrong CCI ammo.

Those don't have but 700 fps, are more like a CB cap.

You want CCI Subsonic with 1050 fps.

DF

And let me know when you find a source of those.....

Yeah, decent subsonic 22LR has been really hard to find. I was never impressed with the Remington offering.

rost495, you're right on the lack of Bullseye data, since almost all published 300 Blackout data is meant to cycle an AR. Look at 300 Whisper and 300/221 data; you may not find it for that 194gr bullet, but you can find something close and work down to it. Red Dot is a good one for this too.

Remember to work down with subsonics, particularly jacketed, to avoid sticking a bullet in the barrel.

Thanks for the subsonic info Yondering and Dirtfarmer.




Travis

Y ondering, that thought crossed my mind about 4am... So i guess its a good one since you mention it, I"ll dig up data on 300/221/whisper and see what gives.

Yes on working down. I coat the bullets with UBC, and the barrel will be coated this summer, when I get time, so that will help vs sticking some.

Fastest is quietest then?

maybe should have bought 8 of Bullseye instead of 8 of H110... but you know, I may well have a jug of bullseye for rainy days... will check that one evening.

Not as cheap as they have been, but available. Haven't tried these, but would think they'd be OK.

http://www.eabco.net/RWS-SubSonic-Hollow-Point-22-LR-Ammo-50-Rnds_p_14350.html

DF

Yep, the idea is to end up with the lowest possible muzzle pressure, for minimum noise. In theory, and it seems to hold true for the most part, small charges of faster powder peak quickly and pressure drops off again for very little "pop" at the muzzle.

I've also used Unique in the 300, and it can work, although faster powders are a little quieter.

Never tried the UBC coating, although most of my subsonic shooting is with powder coated cast bullets, which are very slick anyway.

Viht N110 is quiet for subsonic 300 blackouts. Great for single shots and bolt actions. It was not 100% reliable cycling my noveske AR. I finally got my hands on AA 1680 which is what I now use reloading subsonic 300 Blackout.

Gemtech subsonic 22 LR ammo works great in my HK 22 AR cycles everytime. Also cycles my Colt 1911 22LR and of course quiet. Stupid quiet on my contender. I use my Silencerco Sparrow suppressor on all my 22 rifles.