Sub sonic .22 ammo

[Carl N. Brown]

subsonic .22

Standard velocity .22 lr is just below the speed of sound
about 1080 fps with 40 grain bullet for about 104 ft/lbs energy.

CB Long is about 730 fps with a 30 grain bullet for 35 ft/lbs.

Aguila .22 Sniper SubSonic is about 940 fps with a 60 gr. bullet
for about 118 ft/lbs, more energy than a .22 lr std. vel. and almost
as much as a .22 lr high velocity.

They are all below the speed of sound, but .22 SSS has over three
times the kinetic energy as the .22 CB long.

They are quiet from rifles, especially the CB, but they can be
noisy in short barrel pistols. With the CB in a rifle, you can hear
the firing pin hit: there is no need for extra noise reduction.

 

[Carl N. Brown]

subsonic functioning in semi autos

The CB Long will not function any of my semi-autos.

The .22 LR Std Velocity subsonic will function most, but gives
occasional failures in a Marlin M60 that does function well
with the .22 SSS (the M60 has a new, stiff recoil spring).