Lee Black Powder Minie Mould - Single Cavity .500" 360 gr

The Lee Black Powder Minie Mould – Single Cavity .500" 360 gr is a precision casting tool purpose-built for shooters who load black powder minie balls for historical firearms, muzzleloading rifles, and period-correct military reproductions. This single-cavity mould delivers consistent 360-grain projectiles with CNC-machined precision, ensuring uniform roundness and diameter control essential for accurate, repeatable ballistics downrange.

Constructed from aluminum rather than steel or iron, this mould offers significant field advantages. Aluminum resists rust and corrosion, a critical benefit during extended range sessions or storage in humid environments. The material's superior thermal conductivity allows faster heat cycling—bullets cool and solidify quicker between pours, reducing idle time between casts and accelerating production. At 0.71 lbs, the mould weighs approximately 33% less than traditional iron or steel moulds, minimizing hand and wrist fatigue during long casting sessions—a substantial ergonomic gain when loading ammunition in volume for extended shooting schedules.

This mould is engineered for serious black powder enthusiasts, Civil War reenactors, historical firearm competitors, and dedicated muzzleloaders who demand consistency and durability. The .500" diameter and 360-grain weight specification accommodates standard large-bore rifle platforms chambered for minie applications. Single-cavity design requires more pours per volume but delivers superior quality control compared to multi-cavity alternatives—critical when precision and uniformity directly influence shot group size and historical authenticity. Lee Precision's established reputation in reloading equipment ensures this mould meets the standards expected by operators and shooters who depend on repeatable, field-proven tools.