Videos tagged with Rockwell Hardness Tester

This guide details the process of using a Rockwell Hardness Tester (Model HR-150A) to verify the metallurgical integrity of a Mauser Model 98 rifle action. Expert instruction from Larry Potterfield of MidwayUSA demonstrates how to test critical components like the bolt locking lug and receiver recoil lug, ensuring their original heat treatment remains intact for safe customization. Readings of approximately 35 HRC for the bolt lug and 30 HRC for the receiver lug are shown as acceptable.