RCBS Precision Micrometer .30-06 Sprg - 88324

This precision micrometer measures chamber headspace and bullet seating depth to 0.001-inch accuracy, measuring from the datum point on the case shoulder to the base for SAAMI tolerance readings. It is designed to help reloaders achieve safe, accurate loads while extending the life of rifle brass. The tool requires only a few twists to determine critical measurements for .30-06 Springfield ammunition.