Originally Posted by szihn

Using a different way to calculate ballistic energy that also considers diameter into the mix (diameter is what is obtuse to any bullet's direction of travel, so the larger diameter the bullet the more tissue it's striking and moving out of it's way) is to multiply diameter by weight by velocity at impact and divide by 7000 (7000 is used because we enter our weight in grains and one grain is 1/7000 of a pound)

So .224 X 55 X 3700 FPS = divided by 7000 = 6.512

......


That is a whole lot closer to the real world.


0.224 x 55 x 3700 / 7000 = 6.512
0.355 x 147 x 990 / 7000 = 7.380

And today I learned a subsonic 9mm load is a more effective round than a .22-250!