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Obsolete Brass & Gunsmithing
for Antique Firearms

Rocky Mountain Cartridge, LLC is a company dedicated to the production of obsolete and hard to find cartridge cases for the re-loader and black powder cartridge firearm enthusiast.

Our cartridge cases are "CNC" lathe turned from solid round brass bar stock, conforming to the tightest manufacturing tolerances. Because our cases are lathe turned on a CNC machine, we are also able to alter any dimension of the cartridge to meet any special applications if required by the customer. These "special" applications include over/under sized, short or long chambers, excessive headspace and custom chambering.

Our current line of cases covers most of the American obsolete black powder calibers from the .22 Maynard center fire to the .58 caliber musket. We even can provide brass for Bore Calibers up to 4-Bore for your African Dangerous Game rifles!

We also offer many of the European calibers both on sporting and military applications. We welcome new and different cartridges. Just send in the specifications (or a chamber cast) and we will give an evaluation and estimates on the production of the particular cartridge case. We can also provide target caliber cases in small or large primer pockets.

We have a wide range of calibers available in several categories of cases:

Schuetzen calibers
Black Powder Silhouette / Long Range
Old military calibers
Cowboy Action
Large Bore Double Rifles
Shot Gun
Custom and Specialty

We also restore and repair antique firearms in whole or part. A specialty of RMC is sleeving worn out barrels to bring back the guns original accuracy. Contact us for estimates on your work.