Ammunition Specifications Gauge: 20 Gauge Shell Length: 3 inches Shot Weight: 5/8 oz. Quantity: 5 rounds per box Trophy Copper Slug Slug hunters have a new option when hitting the deer woods. Trophy Copper Sabot Slug is an all-copper slug that incorporates the most advanced technology in the industry. It successfully achieves better accuracy, less drop, manageable recoil and consistent penetration and expansion.