RIO Ammunition Heavy Field 28 ga 2 3/4in MAX 1 oz Size 6 1200 fps - 25/box. These game loads come in 16-gauge 28-gauge and .410 bore sizes to suit your particular weapon. They measure 2_ or 3 inches in length and deliver an impressive muzzle velocity of up to 1300 feet per second. If you are in the market for a heavy-duty and reliable game load look no further than the Rio Heavy Field line of sub-gauge game loads. These game loads are packed with up to 1 1/8 ounces of #6 7 8 or 9 shot to ensure tight shot patterns each and every time. Specifications for RIO Ammunition Heavy Field 28 ga 2 3/4in MAX 1 oz Size 6 1200 fps: Manufacturer: RIO Ammunition Gauge: 28 Number of Rounds: 25 Shot Size: 6 Shell Length: 2 3/4 in Muzzle Velocity: 1200 ft/s Application: Field Included Accessories: None Shotgun Shot Weight: 1 oz Shot Material: Lead Primer Style: Centerfire Cartridge Case Material: Plastic Brass Lead Free: No Package Contents: RIO Ammunition Heavy Field 28 ga 2 3/4in MAX 1 oz Size 6 1200 fps What is RIO Ammunition Heavy Field 28 ga 2 3/4in MAX 1 oz Size 6 1200 fps good for? The manufacturer says that it is best for field.RIO Ammunition RCHV286: Heavy Field 28 ga 2 3/4in MAX 1 oz Size 6 1200 fps - 25/box