so how about this.....
M67 Fragmentation grenade..
using the spherical charge equation.
(7620/(7620/0.333)=((0.1/0.18)+3/5)-1/2 <--- that in negative one half as an exponent.
22882 = 0.65555555555555555555555555555556
Fragment is moving a 0.66 meters per second?
But, then E-factor is based on speed and diameter of the projectile..... without weight as a factor.
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