Hi I used to archery hunt for about eight years before I got sick, and can't do it anymore, I have a Martin Magnum Warthog bow 55 to 70 lb draw and I used to shoot Bear 150 grain broadheads and they were pretty accurate up to 45 yards. I had my bow set for around 65 lbs, and 260 fps, I don't know how well they will work in some of the newer extreme bows with more speed, I would think not as well. I don't know why alot of these bow hunters think they have to shoot over 320fps to get an animal, its more of a macho thing, I think. See my impressive bow its extremely fast, to bad I can't hit anything with it. I'm not saying all the archery hunters are that way for there are some very good ones. By the way if you know of anyone looking for a good compound bow with 2 dozen arrows, broadheads, fieldpoints, two sights, wrist release, quiver, hardside carrying case, and more I have my Martin Magnum Warthog up for sale for $300 for all its a great deal for someone, e-mail me at edoredm@yahoo.com