Sightmark SM39006 Boresight 300 Win Cartridge Brass Sightmark's 300 Winchester Magnum is pre-calibrated for precision accuracy and is constructed of durable brass. The boresighter is compact and lightweight and reduces wasted ammo. Included is a carrying case and batteries. Type: Bore Sighter Caliber: 300 Winchester Style: Cartridge Material: Brass Quantity: 1
