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Old September 28, 2010, 12:27 PM   #16
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Join Date: March 15, 2005
Location: Central Connecticut
Posts: 2,973
Originally Posted by mykeal
Ok, I'll try again: what does "1026 fps from 50 gr ffg Goex under a .495 rb spit patched with 0.018" pillow ticking" mean?
In dry air at 20 °C (68 °F), the speed of sound is 343 metres per second (1,125 ft/s). This equates to 1,236 kilometres per hour (768 mph)...
It means that the projectile's rate of travel was subsonic, or not moving as fast as this jet plane pictured below. Ain't it beautiful?

Last edited by arcticap; September 28, 2010 at 09:04 PM.
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