Thread: How to make my .22 quieter

My guess is that CCI Subs HP is designed to cycle in semi-autos. it is therefore loaded close to the edge of sound speed. When you shoot semi you lose a bit of speed. I have shot thousands of CCI subs out of 10/22 and never had a supersonic one. One online report show they average 1020 FPS in 10/22 and less with suppressor. https://rimfirechannel.blogspot.com/...-grain-hp.html

Naturally when you shoot bolt action it will go faster. One online report show tested 10 shots, they all go over 1070 fps, 4 went over 1090 fps, 1 went over speed of sound of 1100 fps. https://squirrelhuntingjournal.com/c...p-ammo-review/

if you were shooting it in cold or high altitude from a bolt gun, it will likely to produce more supersonic shots. it is inherent in its design.

CCI Suppressor on the other hand lowers the speed further (1050 down to 970) so you are guaranteed to be subsonic even with bolt action. To ensure killing power they increase projectile weight from 40 to 45 gr. You pay more for it given that it has more lead and probably more powder.


One last point, my guess is that all subsonic 22LR ammo are more expensive to produce than supersonic ammo due to tighter tolerance required to keep speed within range. Too fast it becomes supersonic and too slow it will not kill game. With supersonic ammo they can be a bit more loose with the amount of powder and the weight of of the projectile. I bought a case of Aguila "superextra", 50% go subsonic and 50% go supersonic. The Aguila "subsonic" is about 20% more expensive, but looks to me to be the same ammo just slower.

I have shot thousands of Eley team, it and Match and Tenex are the fastest sub-sonic ammo I have shot yet i never had a supersonic one. They have tighter tolerance and they cost more.