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Old 09-16-2020, 02:10 PM
ABN1017 ABN1017 is offline
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M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot  
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Default M&P 15-22 won't cycle. Need to use charging handle every shot
Finally got to the range with my 15-22 to sight it in. I used CCI Quiet-22s (720fps) and ran about 200 rounds through it. I had to use the charging handle to feed a new round for every single shot. I've read about some of the feed & ejection issues, but this seems different. These rounds don't have much power at all and I'm wondering if that's the problem.

Any thoughts are appreciated.
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Old 09-16-2020, 06:19 PM
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Eric300 Eric300 is offline
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M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot  
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Make sure your rifle is cleaned and LUBED really well.
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  #3  
Old 09-16-2020, 06:55 PM
Mike, SC Hunter Mike, SC Hunter is offline
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M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot  
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Those low powered rounds aren't for semi auto's(pistol or rifle). Get some standard or high velocity rounds and your rifle will work.
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Old 09-16-2020, 07:08 PM
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M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot  
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Read the warning on the box. It clearly states it may not cycle semi auto's.
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Old 09-16-2020, 10:43 PM
Tim Tom Tim Tom is offline
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M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot  
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I agree with the responses above. The only time I've had success with the CCI Quiet-22s would be with the rifle suppressed. The additional back pressure definitely gets that bolt a movin'.
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Old 09-17-2020, 01:38 AM
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M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot  
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The manual for all my semiautomatic firearms chambered in 22LR recommend using High Velocity ammunition for best operation. People here and on other forums have successfully used Standard Velocity ammunition with no issues, including myself.


To run anything slower would require something to create back pressure so that the action will operate, like a suppressor. Low velocity ammunition just doesn't create enough recoil to properly cycle the bolt otherwise.
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Old 09-17-2020, 06:10 AM
kbm6893 kbm6893 is offline
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M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot  
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Quote:
Originally Posted by bigggbbruce View Post
Read the warning on the box. It clearly states it may not cycle semi auto's.
Yep. I have tried the quiets in every semi auto I own. Won’t cycle the bolt. Says right on the box.
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Old 09-17-2020, 08:38 AM
cyphertext cyphertext is offline
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M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot  
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Same info on the web page.

Quiet-22
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Old 09-17-2020, 09:24 AM
Destructo6 Destructo6 is offline
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M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot  
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I've tried various subsonic .22lr (including the CCI Quiet) in my SW MP15-22 and none were reliable even with the suppressor mounted.

Standard velocity at a minimum.

The Quiet stuff cycles fine in a Remington 552 Speedmaster.
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Old 09-17-2020, 12:32 PM
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M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot  
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As noted Quiet 22 will generally not cycle a semi-auto... definitely doesn't work in any of mine.

FWIW, I've found standard velocity .22lr to be just as quiet through my suppressor (Dead Air Mask HD) as any of the super-whoopie 'suppressor' ammo. And more reliable.
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Old 09-17-2020, 01:16 PM
reddog81 reddog81 is offline
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M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot  
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CCI makes a couple different “quiet” .22 loads along with numerous other subsonic loads. There is a specific quiet .22 with a 45 grain bullet and 835 FPS rating that is meant for semi autos. That one might cycle your 15-22. The 720 FPS 40 grain bullet is meant for bolt actions or revolvers.
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Old 09-20-2020, 01:19 PM
ABN1017 ABN1017 is offline
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M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot M&P 15-22 won't cycle. Need to use charging handle every shot  
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Thanks everyone. Appreciate the thoughts. Sub-sonic ammo was the issue, as I thought & you confirmed. Brain cramp on my part. Always check the box.
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