The RCBS Precision Mic Headspace Gauge, .25-06 Remington (brand part no. 88307) lets a .25-06 Remington handloader check chamber headspace and bullet seating depth without a separate headspace comparator kit. A few twists of the Precision Mic measure from the datum point on the case shoulder to the case base, reading out spot-on SAAMI tolerances to within 0.001 inch. Reloaders use that reading to set full-length sizing dies precisely and to dial in seating depth for a specific rifle’s chamber and throat. Because it is chambering-specific, it only works for .25-06 Remington brass, but for that one cartridge it is a fast, repeatable way to keep loads safe and brass life longer.

Key Specifications

• Measures headspace to 0.001 inch reads from the case shoulder datum point to the base for a precise SAAMI-tolerance check.
• Checks bullet seating depth lets the handloader dial in seating depth for a specific rifle’s chamber and throat.
• Chambering-specific to .25-06 Remington machined to this cartridge’s shoulder geometry, so it is not interchangeable with other calibers.
• Shipping weight of 0.7188 lb gives a quick reference for order weight and shipping planning
• Extends brass life dialing in precise headspace and seating depth reduces case stretching over repeated firings.

Frequently Asked Questions

What does this tool measure? It measures chamber headspace and bullet seating depth to within 0.001 inch by reading from the case shoulder datum point to the case base.

Does this gauge work for other calibers? No, it is machined specifically for .25-06 Remington and is not interchangeable with other cartridges.

Buy the RCBS Precision Mic Headspace Gauge, .25-06 Remington

Order the RCBS Precision Mic Headspace Gauge, .25-06 Remington from RCBS to dial in headspace and seating depth on your .25-06 Remington loads. Pick it up from our Lubbock, Texas gun shop. Browse our reloading accessories lineup for more.