No. 9 Our slowest handgun propellant, No. 9 is the best .44 magnum powder available. This double base, Spherical propellant gives excellent velocities for the pressures generated, and with less flash than comparable powders. It is intended for use in large capacity handgun cartridges (357, 41, 44 magnum, and 454 Casull). No. 9 is also suited to some small rifle cases (25/20, .30 Carbine) and the .410 shotgun. No. 9 performs best with heavier bullets in most cartridges. A heavy bullet pull is required for consistent performance when using lighter bullets.