2200 lbs energy to cleanly kill a moose. Take a look at the Remington chart.

http://www.remington.com/products/ammunition/ballistics/results/default....

Beleiving that theory, one would not dare use the 150 gr Rem Express in 270 win @ a hundred yards to shot a moose...just wouldn't be a clean kill.

Ya don't really need a calculator. If you assume that the reloading manual is right, the formular for energy is fairly simple.

Veolcity x velocity devide by 64.32 (weight of gravity) Devide by 7000 (#grains in
one pound) times the bullet weight. equals ft lbs energy

What ever your shooting, not a 30-30 or the likes, sight it in dead on for 250yds. With the majority of cartridges, you'll never be more than 4" high or 4" low out to between 275 to 300 yds. Some will do better and some not quite as good. Get within 250yds and do your job and the job is done!

Many of the manuals have tables in the back showing velocity down range, of course they show energy too,,,,,,,but then if you don't figure it out yourself, you won't have anything else to do!

I never take much heed in how much energy a particular animal needs. I've seen moose drop on the spot with 22 mag. and walk off after being hit by 300 weatherbys. If you look at .300 savage, 30-30, 303brit., etc. it would seem you should not use them for moose by the countless dead moose would tell you otherwise if they could.

Looked up what I had used for a reference and my MISTAKE it was muzzle energy.

Quote: Many hunters have a favorite caliber and the firearm restrictions for the moose season are minimal, allowing a wide choice of calibers. However, for the greatest assurance of a clean kill, moose hunters should select a caliber with a minimum 150-grain bullet and a muzzle energy of at least 2,200 foot-pounds. Whatever cartridge you choose, good shot placement is extremely important.

Recommended Bullet Size And Muzzle Energy For Moose
Bullet Size: Min. 150 gr. bullet
Minimum: 2,200 ft. lb.
Muzzle Energy Adequate: 2,600 ft. lb.
Preferred: 3,200 ft. lb.

Sorry for the misinterpretation on my part. on me not you!

Steve
Barrington, NH