Several years ago, after a massive broadhead failure with Bear Razorheads, I switched to a chisel tipped broadhead made by Kolpin (no longer available). The three blades were inserted into the body at about a 60 degree angle (which seemed to match the hard helix of my fletching well). These broadheads "twisting" action actually helped to spiral them after launch and the arrows shot tighter groups than the fieldtips they replaced. They were also very tough heads...

Check with NAP...the last time I looked they were beginning to produce some very similar broadheads to help with high speed bows...

Be sure that your bow is TUNED though...I have not had any problems with any broadheads that I have tried...launch speed is 315 ft/s.