Hawke Vantage IR 3-9x 40mm Rifle Scope - Slug Gun SR - Specifically designed for Slug Gun, Muzzleloader, and Straight-Wall cartridges such as 350 Legend. The Slug Gun SR reticle can be calibrated to speeds of 1300-2400 feet per second. It features illuminated aim points to assist with longer distance shots. All Vantage riflescopes feature Hawke's H2 optics in a variety of configurations. Nitrogen purged. Shockproof. Waterproof. Fog proof. All caliber rated.