Montana Precision Swaging makes excellent lead cast bullets in a variety of diameters, weights and styles. Whether it's cowboy action shooting, blackpowder cartridge reloading or just plinking at the range, Montana Precision Swaging has a bullet to fit your needs.Alloy: 20:1Hardness: Brinnell of approximately 9.25.Notes: Recommended velocity of 1200 fps or less.Bullets are sized and then lubricated with SPG lube, specifically for use in black powder cartridges.Some Montana Precision bullets have very specific applications based on the bullet's design. For example, Schmittzer and Postell describe the bullet's shape and contour.