The RCBS Precision Mic for .223 Remington (part no. 88304) lets handloaders determine chamber headspace and bullet seating depth to 0.001 inch with just a few twists. It measures from the datum point on the case shoulder to the case base, giving spot-on SAAMI tolerance readings without a trip to a machine shop. It’s built for precision rifle reloaders who want safe, accurate loads that extend the life of their brass.

Key Specifications

• Chambered for .223 Remington measures this cartridge’s specific case dimensions.
• Measures chamber headspace to 0.001 inch precise enough for safe, repeatable handloads.
• Measures bullet seating depth to 0.001 inch the same precision applied to seating measurements.
• Measures from the datum point on the case shoulder to the base the method that gives spot-on SAAMI tolerance readings.
• Extends rifle brass life precise headspace control reduces case stretching and early case failure.

Frequently Asked Questions

What does the Precision Mic measure? Chamber headspace and bullet seating depth, both to 0.001-inch precision, measured from the case shoulder datum point to the base.

Why does this tool help extend brass life? Precise headspace measurement helps you avoid over-sizing cases, which reduces case stretching and extends the number of safe reloads per case.

Buy the RCBS Precision Mic .223 Remington

Order the RCBS Precision Mic for .223 Remington through our reloading equipment lineup. Order it from our Lubbock, Texas gun shop for fast, insured shipping.