Redding Reloading SAECO Lead Hardness Tester Features The Redding SAECO Lead Hardness Tester operates by inserting a cast bullet into its aluminum housing and turning a hardened steel indenter until it comes to a stop against the bullet s surface. The depth the indenter penetrates is then read directly off a vernier scale calibrated from 0 to 10 using the established SAECO hardness scale. This simple mechanical process gives a repeatable objective hardness reading without the need for complex lab equipment putting precision measurement within reach of any home caster. Knowing a bullet s true hardness lets shooters confirm their cast loads will perform safely at their intended velocity. A hardness reading of at least 6 is generally recommended for medium velocity handgun loads while readings above 8 are better suited to magnum handgun loads or gas-checked rifle bullets that see higher pressures. For reference wheel weights typically test between 7 and 9 on the scale while linotype alloy commonly reads a full 10. This makes the tester equally useful for casters working from reclaimed scrap lead or from known alloys since it verifies actual hardness rather than relying on assumptions about the source material. For BPCR competitors and cast bullet shooters alike this tester provides the confidence that comes from knowing exactly what they are loading. Redding Reloading SAECO Lead Hardness Tester Specifications Manufacturer: Redding Reloading Model: SAECO Lead Hardness Tester Scale Range: 0 to 10 SAECO Scale Housing Material: Aluminum Available At: GrabAGun