The RCBS Bullet Mould 257-120-SP (Model R82016) is a precision-engineered manual reloading tool designed for bullet casting hobbyists and handloaders. Machined from solid, pearlitic cast iron blocks, this double-cavity mould allows users to cast custom lead bullets with a nominal diameter of .258 inches and a weight of 120 grains. The cast projectiles feature a semi-pointed profile with a gas check heel, specifically optimized for .25-caliber centerfire rifles. Operating as a purely mechanical and thermodynamic tool, it requires no electrical power or local SAA/RCM compliance certifications for use in Australia.

Key Features

• Double-Cavity Design: Casts two 120-grain bullets simultaneously, doubling production efficiency during manual casting sessions.
• Pearlitic Cast Iron Blocks: Machined from solid, malleable cast iron and precision ground square prior to cavity cutting to ensure repeatable, clean mating of the block halves.
• Steel Alignment Pins: Equipped with robust steel alignment pins that maintain precise alignment over years of thermal expansion and heavy casting usage.
• Blued Steel Sprue Plate: Features a 3/16-inch thick solid steel sprue plate held under tension by spring washers to cleanly shear the bases of the cast bullets.
• Thermal Stability: Heavy cast iron construction retains heat effectively, allowing the mould blocks to maintain the optimal thermodynamic working temperature where lead flows smoothly without frosting or wrinkling.

Product Specifications

• Model Number: R82016 (also referenced as 82016)
• Calibre: .25 Caliber
• Nominal Bullet Diameter: .258 inches
• Nominal Bullet Weight: 120 grains
• Bullet Profile: Semi-Point (SP) with a gas check heel
• Mould Cavity Quantity: 2 (Double Cavity)
• Approximate Bullet Length: 1.02 inches
• Approximate Nose Length: 0.68 inches
• Shipping Weight: Approximately 0.45 kg to 0.9 kg (0.99 lbs to 2.0 lbs) depending on packaging
• Handle Compatibility: Requires RCBS 2-Cavity Mould Handles (Item #80025, sold separately)
• Sizing Tool Compatibility: Uses RCBS Top Punch #515 (Item #RCB85515) for bullet sizing

Who is the Rcbs Bullet Mould 257-120-Sp for?

• Handloaders casting custom bullets for .257 Roberts rifles — requires a double-cavity block that casts .258-inch nominal diameter, 120-grain semi-pointed gas check bullets to produce high-performance custom projectiles matched specifically to .257 Roberts rifle bores.
• Precision target shooters loading for .25-06 Remington rifles — utilizes a precision-ground .258-inch casting cavity to produce consistent 120-grain lead projectiles, enabling handloaders to control alloy composition and bullet weight for maximum accuracy out of .25-06 Remington rifle barrels.