The Cheetah 45/70 is fast because it's super lite, in general super lite arrows are week. Earlier this year I was shooting a Bowtech Patriot Dually with 60 lb limbs so I went on a hunt for a 300 grain arrow that was durable and ended up buying the Cheetas 45/70. These arrows didn't hold up very well at all coming out of a bow that shoots 318! At a local 3-D shoot we had a foam apple that was closer to the size of a volleyball set across a meadow up against a knoll about 175 yards away. Needless to say that out of six arrows I shot at it 3 were broken when I retrieved them. There wasn't a rock in site and at that distance the arrow had lost the majority of it's kinetic energy.....so to make a long story short I wasn't impressed. If it were me I'd go a little heavier, especially since your hunting with them. On the other hand, you've picked a top notch broadhead, Gary at Slick Trick has done a hell of a job with these heads!