Hornady Lock-N-Load Headspace Bushing .400

Hornady Lock-n-Load Blank Headspace Bushing D400 is a bushing designed to fill in the blanks for acceptable bullet sizes for use in the Hornady Headspace Gauge. Designed for use in the Hornady Lock-N-Load Headspace Gauge this Hornady reloading tool is machined to exacting tolerances to ensure reliable results every time you use them.