Hastings 3.5-inch 20 gauge Slug
That's not a typo--this is a 3.5-inch 20 gauge slug that weighs 410 grains and has a muzzle velocity of 2000 fps. It shoots flat and retains deer killing energy to 175 yards and beyond. Hastings will rechamber H&R single-shot 20 gauge slug guns for the new round.