Starline 9mm Largo Brass Cases 100 Count
Starline 9mm Brass Cases. Long Box Containing 100 Units (Bulk Packed)
Starline Ammunition Components is dedicated to maintaining the tightest manufacturing tolerances possible on every metallic case produced. Each 9mm cartridge case is engineered with precision to ensure consistent dimensions that meet or exceed SAAMI specifications, providing reloaders and shooters with reliable and uniform performance.
All Starline brass casings undergo specialized heat treatment processes designed to enhance the structural integrity and longevity of the cases. This thermal conditioning optimizes the hardness and elasticity of the brass, allowing the cases to withstand repeated firing cycles without compromising safety or accuracy.
These are brand new, unfired brass cases with no primer pockets pre-primed, ideal for handloaders who require fresh, high-quality components for custom ammunition assembly. Prior to loading, it is recommended to trim and chamfer the case mouths to ensure proper bullet seating and consistent chambering.
Due to manufacturing tolerances and transportation handling, the case mouths may occasionally exhibit slight deviations from perfect roundness. To guarantee optimal bullet seating and reliable chambering, it is advisable to run the cases through a neck-expanding die. This process will re-round and slightly flare the case mouth, facilitating smooth bullet insertion and preventing bullet setback during seating.
Additionally, any burrs or sharp edges around the case mouth should be carefully deburred and smoothed before loading to avoid damage to the bullet jacket or seating dies.
Users may observe discoloration or spotting on the neck and body of the new brass cases. This is a normal result of the annealing process, a controlled heat treatment performed by the manufacturer. Annealing involves rapidly heating the brass to a precise temperature followed by quick cooling, which imparts the ideal balance of hardness and ductility.
This process ensures the cases can securely hold the projectile while providing the necessary flexibility to expand and contract upon firing and resizing during the reloading cycle. The visible stains are simply residual effects of annealing and do not affect the performance or safety of the cases.