EPR (Extreme Precision Reticle): The top portion of this reticle is designed to range an average adult male: 5'9" tall and 19.5" wide at the shoulders. Each number above a chevron indicates distance in yrds. Ex. With feet on center aim point, the top of the head would touch the apex of the '3' chevron if at 300 yrds. Or, if using shoulders, the same scenario would place the apex of the '3' chevron center mass of target, with the shoulders perfectly inside of the 'V'. SHR (Shooter/Hunter Reticle): This is a clean, duplex style reticle great for those who don't like the clutter. VPR (Variable Power Reticle): Our VPR is intended to provide a highly usable reticle throughout the magnification range, a challenge for most FFP's. The eye is quickly drawn to the outer center cross on low magnification, while higher magnifications present a clear view of the tgt with a floating dot for more precise engagements.