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Old March 23, 2019, 11:33 AM   #6
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Join Date: February 2, 2010
Posts: 6,846
"i bought some cci 22 rounds . would not cycle my suppressed ruger mark 2, but boy they where quite"

I've found the velocity threshold for functioning around 1000fps. Haven't seen reliable cycling below that number even with a clean, well broken in pistol.
The CCI "QUIET" ammo is great for lower noise requirements w/o a suppressor and is one of the most accurate of the low noise types of ammo.
I use CCI SubSonic HP and Aguila SubSonic HP or RN with excellent results and the CCI subsonic reliably cycles the Ruger pistols. The Aguila is right on the edge and sometimes fails to cycle dirty semi-autos. The Aguila from a suppressed bolt action rifle is very quiet and quite accurate.
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