Thread: Where are you getting your cheap .22lr from?

Originally Posted by specweapon

Probably because of the extra difficulty of making a round that fits in a narrow velocity band. Whereas Supers just have to go fast. Different projectile construction too, subs softer and designed to work at that speed

That logic would tell me that subs just need to go slow?

Originally Posted by PERRISCICABA

Velocities on the Standard and subsonic are only 30ft/s difference, standard 1070ft/s and subsonic 1040ft/s

Which brings me to something I have been wondering about. Surely some rifles would shoot standard velocity rounds subsonic???

Originally Posted by Shearer

Which brings me to something I have been wondering about. Surely some rifles would shoot standard velocity rounds subsonic???

No generally check out this thread;

http://www.nzhuntingandshooting.co.n...55/#post622487

Originally Posted by 300CALMAN

No generally check out this thread;

http://www.nzhuntingandshooting.co.n...55/#post622487

Haha. Yeah. I started that thread but got a bit of conflicting info so am still not sure. Someone on another thread also said they lost 80fps shortening their .22lr. The difference between subsonic and standard velocity ammo is only about 40fps.
From Wikipedia,
"The velocity of standard-velocity .22 LR rounds varies between manufacturers. Some standard velocity ammo may be slightly supersonic-around 1,125 ft/s (343 m/s), other ammo such as CCI Standard Velocity .22 LR ammunition is rated at 1070 fps."

1070fps is subsonic. Speed of sound at 0 degrees C is 1125fps ......ish

According to Wikipedia,
"speed of sound in air at 68 °F (20 °C) is about 1,115 ft/s (340 m/s), the subsonic round's muzzle velocity is slightly below the speed of sound under many hunting conditions. However, under cold air conditions at 32 °F (0 °C), the speed of sound drops to 1,088 ft/s (332 m/s)"
This may explain why my once subsonic 200gn 308 reounds decided to get louder when I moved down south

This is just getting more confusing.
Why are "match" rounds standard velocity????
Surely they go through the trans- sonic stage on the way to the target. Something that is not supposed to help accuracy????

Yep speed of sound is 1116 fps at sea level as I recall, and drops as altitude increases. I once hunted possums at over 1000 masl and Subsonic .22 were going super every shot.

Was looking at the Eley web site recently. Their standard velocity is quoted at 1070 fps for target ammo. Their subsonic hunting is quoted at 1040 fps. As other have noted standard velocity should be subsonic in most conditions.
And their high velocity rounds where at 1250 fps both for the 38 gr hollow noise and the 42 gr round nose.
Zane