Here are some 12mm pinfire cartridges that were made by arsenals or specifically for an arsenal.
[color=red]You can click any picture for one twice as large.[/color]
First up are ones made at Københavns Tøjhus. In English this would be “Copenhagen Arsenal.” These were made for their pinfire revolvers that they named as Danish M/1861, M/1865 and M/1871 revolvers.
This next one is attributed as being made at the Armamentarium (“arsenal”) in Delft, Netherlands. I would love any documentation or info on this. It is a shot load.
Up next are French ones. I have a lot of other ones that I suspect were military but I have no way of knowing for sure.
This first one was made for the French Navy by SFM.
The next two were earlier ones by Gevelot. I have no specifics on who exactly they were made for.
Here are some Italian ones.
These first two are made by Arsenale Pirotecnico Di Capua.
The next two are made by Laboratorio Pirotecnico Di Torino.
Any more info on any of these?
And last, but certainly not least, ones made for the Frankford Arsenal during the American Civil War. I have talked about some of these before, and go into much more detail on my article on my website here, but here is an overview again with some new pictures.
In the late 1850s the Frankford Arsenal tested a lot of weapons systems including pinfire revolvers. In September of 1861 they bought 10,000 Lefaucheux model 1854 revolvers from Eugene Lefaucheux’s company. They also purchased 200,000 cartridges. After using these they noticed that sometimes the thin copper case on the cartridges would blow out on the base when detonating. This would sometimes cause issues with the revolvers cycling. The soldier would then have an extra step removing that cartridge before the gun was once again usable. Other than this the revolver got pretty favorable reviews. But the Arsenal strove for perfection so at the beginning of January 1862 Lieutenant Treadwell of the Frankford Arsenal met with Christian Sharps to talk about fixing this blowout problem and manufacturing pinfire cartridges to a more powerful specification.
Christian Sharps came up with the idea to make the base thicker. and the case a little longer so it would hold more power. It was actually a pretty great idea, but Sharps had a problem of overengineering things. His design can be seen below in the sectioned image. He made the copper case thicker at the bottom with a hole though it for the pin and a spot for the primer. Since this was all built as part of the actual case it was complicated to produce.
The issues of the complicated case, as well as other bureaucratic issues such as Philadelphia’s laws on limited amount of powder he could have on his premises caused him to not meet the demands of the Frankford Arsenal. Lieutenant Treadwell then asked his superior, Captain Crispin, who in turned received permission from General Ripley to acquire some of these pinfire cartridges from different manufacturers.
C.D. Leet was the first to answer the call. They manufactured their cartridge to the same specifications as Christian Sharps had laid out, except for one detail; they made it simpler. Rather than the complicated case they manufactured a separate piece of lead with the holes needed for the pin and cap, and simply dropped it down into the copper case.
Allen & Wheelock did the same.