Hornady Lock-N-Load Modified Case 7mm Remington Magnum

The Hornady Lock-N-Load Modified Case for 7mm Remington Magnum is a precision reloading tool that lets handloaders measure bullet Overall Length (OAL) with repeatable accuracy. Each case has the flash hole machined out and replaced with a fine thread that screws directly into Hornady's Lock-N-Load OAL Gauge and Lock-N-Load Precision gauges, giving the reloader a chamber-specific fit for bullet seating depth testing.

The case neck is reamed .002" oversized so the exact bullet intended for the finished load can be seated and bumped back through the sizing die to record a true base-to-ogive measurement. Built from brass and manufactured in the USA by Hornady, this modified case (part number A7MMR) is a must-have accessory for any 7mm Rem Mag handloader chasing consistent cartridge overall length, proper jump, and downrange accuracy.

Use it in conjunction with a Hornady Lock-N-Load OAL Gauge or Lock-N-Load Precision Gauge (sold separately) to sort bullets by length, set seating depth, and dial in a load for your specific chamber.