In this article we will look at a few American companies who loaded pinfire cartridges. Von Lengerke & Detmold was a well-respected New York dealer of fine European-made sporting guns and fishing tackle. They were founded in 1882 and were sold to Abercrombie & Fitch in 1928. They had these pinfire shells custom made by Kynoch & Co. of Birmingham, United Kingdom, and then loaded them in the United States. They also sold their custom shells as new-primed empties

The firm of A. G. Genez was a manufacturer of high quality double barrel shotguns. They also made conversions on guns from earlier types of detonation forms, such as pinfire or percussion, to newer formats, such as centerfire. They also loaded and sold shotshells for their manufactured or converted breech-loading shotguns. The company was established by August G. Genez and spent most of its history at 9 Chambers Street. Genez operated there until November of 1880 when it was advertised as succeeded by Vincent Bissig.

A much more detailed article on A. G. Genez can be found here:

Over the past few posts our exploration of the relationship between pinfire cartridges and the United States has taken a look at the cartridges used in the American Civil War and we have taken a look at some of the uncommon pinfire cartridges that never made it into mass production. In this article we will look at the most prevalent American manufacturer of pinfire cartridges, Union Metallic Cartridge Company (UMC) of Bridgeport, Connecticut.

There are many articles and books about UMC that go into great detail about the beginnings and history of the company so we will only glance at history that pertains to their production of pinfire cartridges.