Konus KonusPro-275 Hunting 3-9x 40mm Rifle Scope - Ballistic 275 - The KonusPro 275 was designed especially for muzzleloaders, helping to take the guess work out of hold over angles for even the most difficult of shots. The exclusive ballistic reticle, coinciding with the most popular black powder loads today, provides you with a system of reference lines for exact aiming points from 75 to 275yds. Lateral hash marks allow for precise leads of moving targets as well as compensating for strong crosswinds. The glass engraved ballistic reticle is unbreakable, and the multi-coated optics are clear and bright. Water, Fog, and Shock proof Nitrogen filled For airguns with 7.5 joules of energy or less Coated lenses Engraved reticle Finger adjustable windage and elevation