"Nick Maclaren" wrote in message
...

In article ,
Chris Bacon writes:
|
| 1000Fps ??? At 12ft/lbs ??? What airgun is that then ?????
|
| A Gammo...made in Spain....does a super job....accurate as all can
be...
|
| But surely you're not in the U.K.? My .22 RF shoots a (subsonic)
| bullet at about that speed (depending on ammunition).

That's .22 short, I assume? .22 long is almost always supersonic.
The difference other than speed between .22 firearms and .22 air
rifles are that the bullet is c. 7 times heavier than the pellet,
so a .22 bullet carries c. 14 times the energy of a .177 pellet at
the same speed.



Don't want to appear pedantic, but isn't the formula for kinetic energy 1/2
mv2? So if v is the same for two projectiles, the energy will vary by half
the mass ratio, hence in your example it would be 3.5 times not 14 times?
Apologies if incorrect :-)