Manufactured in various diameters, the Lee Truncated Cone Pistol Mould (Handles Included) - Double Cavity is excellent for reloading and casting. The aluminum construction of this and other Lee moulds is ideal, because they have the ability to heat up and cool down fast, are rust resistant, and being so light, fatigue on the caster bullet is reduced.The crimped block halves help produce the roundest bullets and offer the best size control possible. In addition, the tangential cutoff is great for eliminating the nip at the cutoff on the sprue plate.