... accurate method for sighting in any 17H.M.R firearm. Simply chamber the 17H.M.R bore sighter like a regular bullet and ... .22, 7.62x39, 7.62x51, 7.62x54, 8x57mm, 25-06Rem (30-06Spr/270Win), 243Win (308Win/260Rem/7mm-08/358Win), 22-250Rem ... , 30-30Win, 264Win 375H+H, 270WSM, 45-70Gove, 6.5x55mm, ... 100% brass and gold-plated gun laser sights 17H.M.R