CENTERFIRE

Centerfire is a broad, organizing category that brings together cartridges using a centrally located primer, spanning rifle and handgun calibers across military, sporting, experimental, and commercial contexts. Centerfire ignition replaced earlier rimfire and pinfire systems in the nineteenth century and became the dominant primer system due to its reliability, scalability, and suitability for higher pressures and larger calibers.

Items in this category include live and inert cartridges, proofs, blanks, wildcats, experimental loads, and boxed material covering a wide range of calibers and design approaches. Because this grouping cuts across specific calibers and national traditions, it reflects the technical breadth of centerfire development rather than a single lineage. For collectors and researchers, the category serves as a practical cross section of centerfire cartridge design, illustrating variations in case construction, bullet technology, and intended use, and providing a useful entry point for comparative study across otherwise separate collecting areas.