Get a hyper velocity round like CCI Velocitors or Aguila Hyper velocity(1500 ft/sec)Energy of the bullet is weight times velocity squared(not weight squared)so velocity is the source for energy and stopping power(not killing power either-lawyers use that term to get your money)
Thanks. that’s helpful. I use the .22 mainly for plinking, but I’m would like to have a mag full of home defense rounds if needed.
The old kinetic energy versus momentum argument. A light, fast projectile will give you kinetic energy and stopping power but a heavy, slow projectile will give you momentum and killing power. In most cases, the difference won't matter but that is not to say that there isn't a difference.
“...Energy of the bullet is weight times velocity squared(not weight squared)so velocity is the source for energy and stopping power(not killing power either...” [Colt1851Navy, post 43]
Wrong.
KE = (mv**2)/2
where
KE = kinetic energy
m = bullet mass
v = velocity
to obtain energy in foot-pounds, use this formula:
energy = (gr*v*v)/450380
where
gr = bullet weight in grains
v = velocity in ft/sec
450380 is a conversion factor to account for gravitational acceleration, and the 1/2 in the basic equation. Units are complex but it tracks properly.
Stopping power is not quantifiable. That’s why DoD doesn’t use it in measuring effectiveness. Same for “killing power.”