RCBS Case Master Gauging Tool Cartridge_450 Nitro Express 3.25 Inch Prime with push button convenience

Prime with push button convenience and is safe with all brands of primers

The thick shank of the jacket and high InterLock® ring keep the core and jacket together providing 50-60% weight retention

Unique™ Case Lube

This allows the handloader to easily seat primers to a consistent depth for reliable ignition

The #1 Small Owl Ear Front Bag is for use on a mechanical front rest

RCBS Case Master Gauging Tool Cartridge_450 Nitro Express 3.25 Inch Prime with push button convenienceThe RCBS Case Master gauging tool quickly measures several important case and cartridge dimensions, including case neck concentricity, uniformity and thickness, as well as case length and bullet run out. All are important to accuracy and safety. It also detects case head separation before symptoms are apparent on the outside of case. The tool is much quicker than a dial caliper and makes a tedious job simple and less tiring.