The.357 maximum was developed in the early 80's by ruger and remington arms as a silhouette cartridge for the blackhawk revolver.This beefed up elongated.357 magnum has also been chambered in dan wesson revolvers as well as several single shot rifles and pistols including the t/c contender.Recommended Usage: ReloadingType: RifleMaterial: BrassStyle: SmallLength: 1.590"-1.600"Gun Type: RifleMetal Type: BrassCaliber Or Gauge: 357 Remington MaximumQuantity: 100 Per Bag