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 .22 LR Sub-sonic. Zero on 9x magnification at 50 yards and the bullet drop compensating reticle provides accurate aim points in 25 yard increments out to 200 yards. Ideal for .22 LR ammunition between 38-40gr and approx. 1040-1090 fps (317-332 m/s).The scope can also be used for 50m zero with aimpoints correct in metric when the magnification is set to 7.9x.