RCBS Chamber Case Length 44 Magnum Features: Simply drop a loaded round into the precision made gauge and if your cartridge fits the gauge it ll fit your pistol. Gauge checks both chambering as well as cartridge length. RCBS: PRECISIONEERED RELOADING. The RCBS Chamber / Cartridge Gauge is a one-piece non-adjustable gauge designed to check all critical dimensions of pistol ammunition to insure proper fit. RCBS has dedicated itself to the craft of handloading ammunition since it was founded in 1943. RCBS is the leading manufacturer of reloading equipment for rifles and pistols. Reloading is an exact process with tight tolerances. It requires precision and skill to be done correctly. Thats why RCBS makes state-of-the-art products all are backed by RCBSs industry-leading reputation. RCBS Chamber Case Length 44 Magnum Specifications: Color: Silver Quickly confirms ammunition will fit your pistol s chamber Easy-to-read engravings display caliber size