I changed my shaft this season to a stiffer shaft. I am tying todecide between the 90g and 115 grn Muzzys. Out of curiosity, I would like to know what group size you are experiencing with fixed blade broadheads. Mine are tighter with the 90's by an inch or so. A typical group with three arrows is about the size of a baseball at 30 yds. The 115's open upto the size of a softball. I want to see what others are averaging.