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Old August 13th, 2007, 04:39   #64
Drake's Avatar
Join Date: Dec 2001
Location: Montreal, QC
Originally Posted by Ronan View Post
I'm pretty sure it has to be both, altho iv been told etheir one = firearm. but you will see pellet guns that are sold that have +500fps but under the joule speed and you don't need a firearm license.
That seems unlikely, seeing as how the smallest commonly-available caliber pellet/BB you'll find is .177cal (4.5mm), which are typically 7.9 grains (just a bit over 0.5 gram) -- posted velocities for .177 cal guns are usually based on that pellet weight.

Quick muzzle energy calculation yields 5.95j at the muzzle. (for 7.9gr @ 500fps)

Common .22 cal pellets are in usually in the neighborhood of 14 gr and are over the 5.7j limit well before 500 fps (360 fps for a 14.6gr pellet, to be precise).

I highly doubt the 5.7j limit was chosen arbitrarily.

Last edited by Drake; August 13th, 2007 at 04:41..
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