Registered reticle design exclusive to Hawke. Bullet Drop Compensating (BDC) aim points calculated for specific caliber. Easy to zero and outstanding downrange accuracy with illuminated aim points for all lighting conditions. Distances etched into the reticle field of view designed for use on maximum magnification. Designed for .17 HMR. Zero on 12x magnification at 100 yards and the bullet drop compensating reticle provides accurate aim points in 25 yard increments out to 375 yards. Ideal for 17gr ammunition at approx. 2550-2650 fps (777-807 m/s). Can also be accurately calibrated for 20gr ammunition. The scope can be used for 100m zero with aimpoints correct in metric when the magnification is set to 9.9x.