Precision one-piece case gage checks overall length and headspace for 300 Norma Magnum. Measures minimum/maximum dimensions to guide trimming and full-length sizing. Made in the USA.
This single-piece case gage is an essential tool for reloaders who demand precision and consistency. It allows you to measure both overall case length and headspace dimensions on fired cases, providing critical data for proper case preparation.
Measures minimum and maximum case length — Indicates when cases require trimming to maintain uniform length across your lot.
Checks headspace dimensions — Ensures your cases are within specification to prevent dangerous pressure variations and premature case failure.
Guides full-length sizing — By establishing a baseline from fired cases, you can determine the correct sizing approach for your reloading process.
Simply insert a fired case into the gage. The gage will show you whether the case falls within acceptable length and headspace parameters. This information tells you whether trimming is necessary and confirms that your sizing die is working correctly.
This gage does not measure body diameter variations. It is designed specifically for use with fired cases to establish a foundation for your full-length sizing and case trimming procedures.
Made in the USA by L.E. Wilson, a trusted name in reloading precision tools.