View Single Post
Old September 16th, 2011, 00:51   #32
ILLusion
GBB Whisperer
 
ILLusion's Avatar
 
Join Date: Jun 2002
Location: Toronto
Quote:
Originally Posted by Ricochet View Post
The basic formula being: velocity (speed) times Mass (weight) equals joules (energy).
The understanding is correct. The formula isn't.

The formula should be:

(Velocity / 3.3)^2 x projectile mass / 2,000 = Energy

So for example, the energy of a 0.20g BB traveling 328fps is calculated as:

= (328fps / 3.3)^2 x 0.2g / 2,000

= 99.394^2 x 0.2 / 2000

= 9879.167 x 0.2 / 2000

= 0.988 Joules

Last edited by ILLusion; September 16th, 2011 at 00:56..
ILLusion is offline   Reply With Quote