Derraco Primer Dephth Gauge

The Derraco Primer Gauges is a precision reloading tool designed to measure primer seating depth accurately in brass cases. Built with CNC-machined 6061 aluminum bodies with durable anodized finishes and colour-coded calibre bases, this gauge ensures consistent results. Featuring a tungsten carbide probe for exceptional wear resistance and a precision ground stainless steel calibration pin, it delivers reliable measurements. Available with bases for popular calibres (.223R, .308W, .300 WM, 7.62×39 PPC, .338 LM) and compatible with standard 8 mm stem dial indicators, it’s ideal for reloaders seeking exact primer depth control and improved consistency.