Federal Top Gun 12 Gauge Ammo 2 3/4″ 1 oz #7.5 Shot;offers the following information: For nearly a century Federal Ammunition has put its focus on manufacturing quality products with cutting edge technology. This dedication to excellence has given Federal a competitive edge as an ammunition technology giant. Each 12 gauge shell in this case of 250 is 2-3/4″ long and carries a 1 oz payload of #7.5 lead shot. You can expect to see around 1,250 feet per second at the muzzle with this ammo. These are perfect shells for the high volume shooter who is looking to break clays and not the bank.