This technical load from Underwood Ammo is engineered for maximum trajectory consistency.
Propellant charge volumetric precision is monitored at a sub-milligram level to ensure a standard deviation (SD) of <12 FPS.
Manufacturer
Underwood Ammo
Rounds
20
Material
Brass
Condition
New
Bullet Type
Solid Lead
Bullet Casing
Solid Lead
Bullet Weight
255
Rounds / Box
20
Technical Assessment Notes
Manufacturing tolerances verified via optical micrometer to ±0.0001".
Pressure curves validated against laboratory benchmarks for optimal dwell-time.
Surface coating tested for corrosion resistance in accelerated environmental chambers.