The crossbow XPR engineered on a shorter ferrule with higher mass-centralization than the Hypershock and Tremor.  Designed with the XPR blades for a super-efficient shape and an added Cut-on-Contact rear deployment blades that create a devastating entry wound channel.  The crossbow XPR has the "physics" based inboard center-of-gravity blade geometry, meaning the XPR blade cannot open on release, but will open in game  everytime.  125 grain has a 2" cutting diameter and the 100 has a 1.375" cutting diameter.