Peterson Cartridge Unprimed Rifle Brass Features The Peterson Cartridge Unprimed Rifle Brass in .260 Rem is held to a match grade standard throughout manufacturing from small batch production lines through a dedicated quality control department. This brass uses a small rifle primer pocket which carries a smaller flash hole of roughly 0.060 inches compared to the 0.080 inch flash hole on Peterson s large primer pocket brass. Reloaders working with this SRP brass need an extra small or undersized decapping pin to deprime the cases properly. That smaller flash hole is designed to improve powder ignition consistency which can translate to more uniform velocities across a batch of handloads. Every case is annealed and cleaned before it ever leaves the factory reducing case hardness variation and helping cases last through more reloading cycles. The brass ships packaged in a heavy duty plastic ammo box keeping 50 cases organized and protected during storage and transport. Because this is unprimed brass reloaders retain full control over primer selection powder charge and seating depth when building their .260 Remington loads. This brass suits handloaders who want match grade consistency and the ignition benefits of a small rifle primer pocket in their reloading process. Peterson Cartridge Unprimed Rifle Brass Specifications Manufacturer: Peterson Cartridge Model: Unprimed Rifle Brass Caliber: .260 Rem Material: Brass Firearm Type: Rifle Primer Size Type: Small Rifle Reloadable Case: Yes Rounds Per Box: 50 Available At: GrabAGun