Hornady Lock-N-Load A Series Modified Case 300 Win Mag - Brass

The Hornady Lock-N-Load A Series Modified Case is a precision reloading tool engineered for use with Hornady Lock-N-Load O.A.L. and Precision Gauges. This brass modified case for the .300 Winchester Magnum is not reloadable brass but rather a measuring instrument that allows handloaders to verify and set overall cartridge length (OAL) to exact, repeatable specifications before loading.

Specifically prepared from quality brass, the case is threaded at the case-head so it screws directly into any compatible Hornady Lock-N-Load gauge. A .002" oversized neck accepts the same bullet profile you intend to load, ensuring that the headspace and OAL measurements taken with the gauge reflect the true seated dimension of your finished round. This delivers consistent seating depth and improved accuracy across your handloads.

A purpose-built accessory from the Hornady A Series modified case lineup, the A300M is a must-have for any serious 300 Win Mag reloader who wants to dial in their ammunition with the precision Hornady gauges are designed to provide.