Brenneke K.O. 12 Gauge 1 oz 2 3/4in Centerfire Shotgun Ammo 5 Rounds. O. 12 Gauge 2.75" 1 oz Slug Shot 5 Bx/ 50 Cs - K.O. are shutgun slugs with a punch. The same exceptional knockdown power that distinguishes every Brenneke slug is built into the K.O. making it an ideal deer load with superb accuracy at medium ranges. Specifications for Brenneke K.O. 12 Gauge 1 oz 2 3/4" Shotgun Ammunition: Manufacturer: Brenneke Gauge: 12 Number of Rounds: 5 Shot Size: Slug Shell Length: 2 3/4 in Muzzle Velocity: 1650 ft/s Application: Hunting Included Accessories: None Shotgun Shot Weight: 1 oz Shot Material: Lead Primer Style: Centerfire Muzzle Energy: 2645 ft-lbs Cartridge Case Material: Brass Lead Free: No What is Brenneke K.O. 12 Gauge 1 oz 2 3/4" Shotgun Ammunition good for? The manufacturer suggests that it is good for hunting.Brenneke SL122KO: K.O. 12 Gauge 1 oz 2 3/4in Centerfire Shotgun Ammo 5 Rounds