Brenneke Green Lightning 20 Gauge 1 oz 2.75in Centerfire Shotgun Slug Ammo 5 Rounds Sl202Hfsgl. 75" Slug 1 oz 5 Bx/ 50 Cs - Green Lightning slugs are power personified with muzzle energy greater than many centerfire cartridges. You'll send a full 1 oz. slug whistling toward your target carrying massive knockdown power and penetration to anything touches. Specifications for Brenneke Green Lightning 20 Gauge 1 oz 2.75" Centerfire Shotgun Slug Ammunition: Manufacturer: Brenneke Gauge: 20 Number of Rounds: 5 Shell Length: 2 3/4 in Muzzle Velocity: 1392 ft/s Application: Hunting Primer Style: Centerfire Shotgun Shot Weight: 1 oz What is Brenneke Green Lightning 20 Gauge 1 oz 2.75" Centerfire Shotgun Slug Ammunition good for? The manufacturer suggests that it is best for hunting.Brenneke SL202HFSGL: Green Lightning 20 Gauge 1 oz 2.75in Centerfire Shotgun Slug Ammo 5 Rounds