Army quantities of old smokeless powder were being often reworked into new plenty of propellants.[3]: 39 Through the 1920s Fred Olsen worked at Picatinny Arsenal experimenting with methods to salvage a lot of single-foundation cannon powder made for Environment War I. Olsen was used by Western Cartridge Business in 1929 https://powder-in-stock07394.bloguetechno.com/the-fact-about-reloading-powder-in-stock-that-no-one-is-suggesting-54613946