Fiocchi blanks are very useful or reenactments, ceremonies, training exercises and hunting dog training.They will give you the noise and realism of conventional ammunition without the projectile.12 ga., 2 3/4" blank, granulated plastic fillerType: BlankCaliber: 12 GaugeRounds Per Box: 25Boxes Per Case: 10Chamber: 2.75"Hazair: Yes