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07-27-2005 | 11:54 PM

#2

HuntElk4Fun

Joined: May 2005

Posts: 231

Likes: 0

From: Rocky Mtns

RE: arrow wt. on elk?

When you talk about arrow weight for the species, you've got to also talk speed, thus kinetic energy. The ol' physics lesson, mass + speed = energy. I've seen all sorts of numbers on KE for Elk and I think 50 ft lbs is common. I personally feel that when it comes to KE, for elk anyway, more than 50is better.

I've always thought an arrow around 400 grains was a great size for plenty of energy and good flight. This is just my preference and I'm sure everyone has their own too. Let's face it, the heavier the arrow, the less flat it is, plus heavy arrows are usually longer and we are all trying to shorten em up. It's a line and game people can play for years. I like 400 and here's some figures to show your arrow vs. mine (428 grains). I'll use 260 fps and 280 fps just for math sake. Some good round normal numbers from today's bows. IBO's aren't hunting FPS.

382 grains
260 - 57.35 ft lbs
280 - 66.52 ft lbs

428 grains
260 - 64.26 ft lbs
280 - 74.53 ft lbs

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