ORIGINAL: GregH
ORIGINAL: TFOX
The answer Greg is NONE,but I am also thinking that a fixed blade broadhead becomes less forgiving in flight at greater speeds.A head that isn't perfectly aligned will be magnified at greater speeds.
TFOX, I've been doing this for a pretty long time. I have always used fixed blade broad heads and have found that they group really well as long as I keep the speed around 275 fps. I took my old speed bow (321 fps) and added a heavier hunting arrow and got the speed down to 275 fps @ 64 lbs. XX78 2413 w/85 gr. BH. I believe the arrow weighs 445 gr, finished. They group beautifully.
I've been using Wasp SST hammers for the last 12 years because they are a tough, quality head and they spin test amazingly well. I only have to mess with about 1 out of 24.
Also, by limiting my speed to 275 fps, the 4 pins on my fixed pin sight (which I prefer) are not tightly packed together. The spacing is just right for seeing the target.
I've been that way too Greg but my speed was always 285 fps this way the bow stayed in spec for ASA shooting. I'd set my rig up for ASA and shoot both ASA and IBO with it, throw on broadheads and hunt. My Allegiance was the first bow I hunted with over 300fps. I was shooting Muzzy and Snypers beautifully out of it.
My 82nd can shoot 340 fps if I wanted it too, for 3D I was sending them downrange at 327 fps but when it came time to set it up for hunting I went with a semi heavy arrow at 280fps. It's all I needed.
