Description The RCBS Precision Micrometer for .338 Win Mag is an essential reloading accessory that enables precise measurement of chamber headspace and bullet seating depth to 0.001 inch. Crafted by RCBS, this tool measures from the datum point on the case shoulder to the base, providing reloaders with accurate SAAMI tolerance readings. Enhance your reloading efficiency and ensure safe, accurate loads that extend the life of your rifle brass with this indispensable tool.
