The RCBS Precision Mic for .338 Lapua Magnum (RCBS part no. 88332) lets reloaders determine chamber headspace and bullet seating depth to within 0.001 inch with just a few twists of the tool. RCBS designed the Precision Mic to measure from the datum point on the case shoulder to the case base, giving handloaders spot-on SAAMI tolerance readings for their specific rifle’s chamber. It’s an indispensable tool for anyone chasing safe, accurate loads that extend the life of expensive .338 Lapua Mag brass.

Key Specifications

• Chambered specifically for .338 Lapua Mag.
• Measures chamber headspace and bullet seating depth to 0.001 inch.
• Measures from the datum point on the case shoulder to the case base.
• Delivers spot-on SAAMI tolerance readings specific to the shooter’s own chamber.

Frequently Asked Questions

What does the Precision Mic actually measure? It measures chamber headspace and bullet seating depth to within 0.001 inch, referenced from the case shoulder’s datum point.

Why does this matter for reloading? Precise headspace and seating depth measurements help produce safer, more accurate loads while extending the life of your brass.

Buy the RCBS Precision Mic, .338 Lapua Mag

Dial in your .338 Lapua Mag loads with measurements accurate to the thousandth of an inch. Order it from our RCBS lineup of gunsmithing tools for fast, direct shipping from our Lubbock, Texas gun shop.