The .58 Musket 24 GA SGS cartridge is a specialized ammunition type designed for replica Civil War rifled muskets, usually in black powder configurations. This cartridge is characterized by its .58 caliber bullet, which is designed to fit bore diameters common to the muskets of that era. The "24 GA" (gauge) portion indicates the casing often used is roughly similar in dimensions to a 24 gauge shotgun shell, although the nomenclature can be specific to certain manufacturers or custom loaders.
Use cases for this cartridge include historical reenactments, black powder shooting sports, and educational demonstrations. These rounds are typically loaded with black powder or black powder substitutes, and they often feature a soft lead Minie ball, which was commonly used during the Civil War for its improved accuracy and ease of loading.
Overall, the .58 Musket 24 GA SGS is part of a niche market catering to enthusiasts of historical firearms and the preservation of living history.