Dual-purpose RCBS gauge checks both chamber fit and cartridge length for .300 AAC Blackout handloads. Ensures safe, accurate ammunition before firing.
The RCBS Chamber/Cartridge Length Gauge for .300 AAC Blackout serves the handloader who demands accuracy and safety. This dual-purpose tool performs two critical functions in a single, compact instrument.
Chamber Fit Verification: Drop your finished round into the gauge to confirm it will chamber properly in your firearm. This prevents the frustration and potential danger of ammunition that won't seat correctly.
Cartridge Length Confirmation: The same gauge simultaneously verifies your round meets proper overall length specifications. Correct cartridge length is essential for reliable feeding and consistent performance.
Handloading demands precision at every step. A round that chambers improperly or exceeds length tolerances can cause feeding problems or unsafe pressures. This gauge gives you confidence that your ammunition meets specifications before you fire it.
RCBS backs this gauge with a Limited Lifetime Warranty, reflecting the quality you expect from a company that has served handloaders for generations.
Perfect for: Serious handloaders working with .300 AAC Blackout who refuse to compromise on quality control.