The BSA Sweet .17 AO Rifle Scope is specifically designed for the .17 HMR. These scopes feature fully coated lenses, an adjustable objective, 30/30 reticle, 2-pc Dovetail rings and generous eye-relief. This Sweet 17 AO series features a ballistically calibrated turret for the 17 gr cartridge.Features :MAGNIFICATION LOW: 3XMAGNIFICATION HIGH: 12XOBJECTIVE LENS DIA. (MM): 40ADJUSTMENT GRADUATION (MOA): 1/4 LENS COATING: Fully CoatedW/E ADJUSTMENT RANGE: 35EYE RELIEF (INCHES): 3FOV LOW @ 100' (FT): 40FOV HIGH @ 100' (FT): 10PARALLAX SETTING (YDS): 7.5 to Inf.