Originally a black powder cartridge, this is basically a .44-40 necked down to accept a .401" diameter bullet. Our .38-40 brass has a wall thickness of .0062" but is still stiffer and less fragile than other brands which make it much easier to reload.
To Be Determined
* Starline Brass does not sell any loaded ammunition. What you are purchasing are brass cases only and will need to be loaded into ammunition in order to be fired from a firearm.