The Lyman 2670637 4-cavity bullet mould stands as a top-tier choice for bullet casting, precision-engineered from leaded steel and finished to exacting tolerances to ensure clean, consistent casts. Its finely machined cavities release bullets smoothly and the entire mould is heat-treated for added hardness and a distinctive blued finish that resists wear. Equipped with hardened steel alignment pins, this 4-cavity mould guarantees perfect mold alignment for fast production and superior accuracy. Built for longevity and precision, it's a must-have for high-volume bullet casters who demand quality and consistency. Precision machined surfaces provide a smooth bullet release for consistent results Special heat-treated blue steel adds toughness and performance for demanding applications Hardened steel alignment pins promote consistent bullet casting results Ground-flat and securely mounted sprue plates enhance bullet casting precision Ideal for crafting 147 grain 9mm pistol bullets, perfect for reloaders Mold break-in time is halved compared to traditional iron, boosting bullet production efficiency Manufactured by Lyman, a renowned brand recognized for premium quality shooting and reloading equipment