Winchester Defender Shotshell 410 Bore 1/4 oz 2.5in Centerfire Shotgun Ammo 10 Rounds. The result is the ideal personal defense load for short-range engagement with the performance needed to stop threats. Specifications for Winchester Defender Shotshell 410 Bore 1/4 oz 2.5" Shotgun Ammunition: Manufacturer: Winchester Gauge: .410 Number of Rounds: 10 Shot Size: BB Shell Length: 2 1/2 in Muzzle Velocity: 750 ft/s Application: Personal Defense Included Accessories: None Shotgun Shot Weight: 1/4 oz Shot Material: Lead Primer Style: Centerfire Cartridge Case Material: Brass Lead Free: No Shotgun Shot Type: Birdshot Gun Type: Shotgun Features of Winchester DEFENDER SHOTSHELL 410 Bore 1/4 oz 2.5" Centerfire Shotgun Ammunition: 3 Plated Defense Disc ProjectilesOptimal penetration and knock-down 12 Plated BBsMassive shock and compensates for aim error Ideal for Short-Range Personal Defense Package Contents: Winchester DEFENDER SHOTSHELL 410 Bore 1/4 oz 2.5" Centerfire Shotgun Ammunition What is Winchester Defender Shotshell 410 Bore 1/4 oz 2.5" Shotgun Ammunition good for? The manufacturer thinks that it is suitable for personal defense.Winchester DEFENDER SHOTSHELL 410 Bore 1/4 oz 2.5in Centerfire Shotgun Ammo 10 Rounds S410PDX1