Ensure the perfect fit of your pistol ammunition with the RCBS Chamber/Cartridge Gauge. Its 1-piece, non-adjustable design allows it to check all critical dimensions of your ammunition to guarantee a proper fit. Simply drop a loaded round into the precision-crafted gauge and if it fits, it will fit your pistol. The gauge checks both chambering and cartridge length, giving you peace of mind and confidence before heading to the range. Don't risk unreliable ammunition choose the RCBS Chamber/Cartridge Gauge for a flawless shooting experience.