All I could find today

[blazzinbird]

Was cci sub sonic, I'm going to give them a try tomorrow hope they do good.

 

[Majorlk]

Was cci sub sonic, I'm going to give them a try tomorrow hope they do good.

Be prepared for a high level of frustration. Subsonic rounds will not reliably cycle a semi-auto. This warning appears on the ammo box on most brands and in most ammo company's description of the ammo.

Research is a wonderful thing.

 

[capt.koolaid]

Sounds like sloppy research to me....subs work fine in mine

 

[Blockhead75]

Just last night I watched a Youtube video of guys shooting a suppressed 15-22 with subsonic ammo. They didn't mention any FTFs and didn't have any on the video itself. Give it a try and let us know how it runs.

 

[telero]

...cci sub sonic...

Standard Velocity or 22-Quiets? Standard Velocity are subsonic and work well in my 15-22. Quiets are definitely quieter than even Standard Velocity, but they don't work reliably for me.

 

[telero]

Just last night I watched a Youtube video of guys shooting a suppressed 15-22 with subsonic ammo. They didn't mention any FTFs and didn't have any on the video itself. Give it a try and let us know how it runs.

Again, might depend which subsonics they were using in the video. Standard Velocity and 22-Quiet are different as far as CCI goes. Not sure about other brands offerings. With a suppressor there should be a little extra backpressure, maybe enough to run 22-Quiet. At least that is my hopes for when my stamp finally comes back. I could live with CCI standard Velocity (it works well in my 15-22 now), but I hope Quiets work better with the suppressor.

 

[Majorlk]

Standard Velocity or 22-Quiets? Standard Velocity are subsonic and work well in my 15-22. Quiets are definitely quieter than even Standard Velocity, but they don't work reliably for me.

Standard velocity and subsonic rounds are not the same thing. Standard velocity is pretty reliable; subsonics are not. Correct terminology is important.

Whether or not standard velocity is subsonic depends both upon barrel length and barometric conditions. Standard velocity is generally not subsonic in rifle length barrels.

There are a few existing threads discussing the subject.

 

[telero]

Standard velocity and subsonic rounds are not the same thing. Standard velocity is pretty reliable; subsonics

True, although at 1070 FPS CCI Standard Velocity generally is subsonic. At 710 FPS the CCI Quiet-22 is definitely subsonic.

 

[Majorlk]

Sounds like sloppy research to me....subs work fine in mine

Not sloppy research, lots of experience shooting the stuff over the years.

 

[Majorlk]

True, although at 1070 FPS CCI Standard Velocity generally is subsonic. At 710 FPS the CCI Quiet-22 is definitely subsonic.

And 710 fps won't cycle most semi-autos.

 

[blazzinbird]

They are 1050fps. 22 lr hp subsonic

 

[telero]

They are 1050fps. 22 lr hp subsonic

They'll hopefully work fine at 1050 FPS. They work great in mine.

 

[ChopperBill]

S&W 15-22 op manual says no subs. Just saying

 

[blazzinbird]

The manual also doesn't say anything about the crisis were in, find what you can

 

[Shooterjgs]

CCI Subsonics cycle in mine... CCI Quiets don't... Just my 2 cents on how they work in my rifle...

 

[04jeeper]

Again, might depend which subsonics they were using in the video. Standard Velocity and 22-Quiet are different as far as CCI goes. Not sure about other brands offerings. With a suppressor there should be a little extra backpressure, maybe enough to run 22-Quiet. At least that is my hopes for when my stamp finally comes back. I could live with CCI standard Velocity (it works well in my 15-22 now), but I hope Quiets work better with the suppressor.

Nope 22 quiets won't cycle a 15-22 with a can on it. I tried, it's really fun though. They however are super quiet out of my savage FV-SR with the can on it.

 

[Majorlk]

They'll hopefully work fine at 1050 FPS. They work great in mine.

1,050 fps is not subsonic velocity. It's standard velocity. True subsonic rounds are under 800 fps.

 

[telero]

1,050 fps is not subsonic velocity. It's standard velocity. True subsonic rounds are under 800 fps.

Sound barrier is right around 1100 fps, so standard velocity does have the potential to be subsonic...but uniformity of the load and atmospheric conditions can change that. Standard velocity will generally be subsonic where I am. And it will cycle the action, which is nice.

 

[Majorlk]

Sound barrier is right around 1100 fps, so standard velocity does have the potential to be subsonic...but uniformity of the load and atmospheric conditions can change that. Standard velocity will generally be subsonic where I am. And it will cycle the action, which is nice.

The potential for standard to be subsonic is much greater in a pistol, where the rounds does not develop maximum velocity. Not so much in rifle-length barrels.

And, as you say, atmospheric conditions play a part in that.

 

[theblackabbot]

I put about 10 rounds of this stuff thru mine once

and there were only 2 of the 10 that did not cycle the bolt.