Lyman Shotgun Bullet Mould / Sabot Slug - 20 ga. Hollow Base

The Lyman Shotgun Bullet Mould for 20 Gauge Hollow Base Sabot Slug is a precision-engineered casting tool designed for reloaders who demand consistent, repeatable ammunition production. Constructed from solid leaded steel machined to an extremely fine finish and heat-treated for durability, this mould delivers uniform sabot slug castings round after round. The hardened steel alignment pins ensure precise cavity register, eliminating the dimensional drift that compromises downrange accuracy and shot-to-shot consistency.

The sprue plates are fabricated from solid steel, ground flat, and secured with tempered steel spring washers and screws for rock-solid stability during the casting cycle. Lyman's all-steel construction cuts typical break-in time in half compared to iron moulds, allowing reloaders to move into full production faster. The hollow base design is engineered to work with standard wads, giving shooters flexibility in component selection. This level of manufacturing precision—combined with the thermal mass and heat distribution properties of steel—results in faster cooling cycles and higher volume output without sacrificing quality.

Shotgun reloaders—whether those developing sabot slug loads for hunting, defensive training, or precision shooting—rely on moulds like this to generate ammunition that matches factory specifications while maintaining cost efficiency. The 20 gauge platform is popular among shooters using lighter recoil systems, upland hunters, and those training with reduced-power loads. Lyman's mould engineering ensures that each casting meets dimensional tolerances necessary for reliable feeding, consistent ballistics, and repeatable performance downrange.

For serious ammunition crafters, component quality at every stage—from the mould itself to the cast bullet—determines whether a reloading operation produces competition-grade ammunition or merely acceptable rounds. This Lyman mould represents the verified engineering standard in shotgun slug casting, backed by decades of reloader trust in the brand.