Been researching optics for my Tikka T3 Tac and have four options. The SWFA 3x9x42ss, US optics st10, Leupold 10x Mark4, and the IOR 2.5x10x42. SWFA has some good deals in the sample list. For punching paper and metal at 600 meters and the yearly Mule deer hunt which optic provides the best value. Looking to purchase this week. Thanks.