Energy

[model 70]

I've always been told that a bullet fired from a rifle for deer hunting should have say...1,000 ft. lbs. of energy at the point of impact.

People hunt deer all the time with .44rem mag revolvers that have around 700 ft. lbs. of energy at 100 yards and a bit over 800 at the muzzle.

That's alot less than 1,000. Can anyone shed some light on this?