Most of us are familiar with the .32 National teat fire cartridges, which were produced in flat and round teat versions. The revolver that fired these cartridges was patented and manufactured by Daniel Moore in 1863, and utilized a flat based teat fire cartridge of his design, not the rounded base cartridge that was patented in 1864 by David Williamson. The heads of the flat based cartridges tended to burst because the metal of the revolver’s cylinder did cover the entire head. The rounded base of Williamson’s cartridge allowed the entire base of the cartridge to be enclosed on the cylinder, with only the teat exposed. Does anyone have or know of a picture of one of the early flat base teat fire cartridges?