Some years ago myself and about 4 other hunting partners used the Thunderhead 125 with great success, when looking for additional speed we switched to the Thunderhead 100 while still enjoying great performance, figuring the 85 grain Thunderhead was more of a good thing most of us switched and it seemed we all felt we had lost the great blood trails and quick killing perfomance of the old reliable Thunderhead which we attributed to the steeper blade angle. It seems most of todays broadheads today share the steep blade angle of the small 85 grain Thunderhead with some exceeding it by quite a bit. Is there a point when the angle of the blade is less likely to provide a clean cut and tend to punch a hole instead of slicing. also I would assume there is a cost in penetration with the steeper blade angles although most bows today have power to spare. Has anyone thats been around for a while had similar results using different Thunderheads or broadheads with steep blade angles. If Im not mistaken didnt the originator of Muzzy broadheads feel there was an optimum angle for the blades ?