Bullseye is one of the earliest American-made smokeless propellants (1898). For many years it was pretty much the standard smokeless powder used by the factories for loading about every handgun cartridge caliber made. There were at least two different variations of Bullseye used by the factories (#1 and #2). #2 is the type still sold today to handloaders. #1 was a little faster burning. Its formulation remains fundamentally the same as it was in 1898. For a long time, the standard propellant used for loading military .45 ACP ammunition was Bullseye. At first it was made by Laflin and Rand, then duPont, then Hercules, and today Alliant. BTW, Unique is exactly the same as Bullseye, except its flakes are cut slightly thicker to slow the burning rate.