The Hornady 7mm Remington Magnum Modified Case (brand part no. A7MMR) is a 7mm Remington Magnum case with a hole drilled and threaded through the body, made to thread onto a Hornady Lock-N-Load OAL gauge or comparator body. Together they let a handloader measure the exact point a bullet contacts the rifling in a specific rifle’s chamber, the reference point for setting a precise, repeatable seating depth.

Key Specifications

• Machined specifically for 7mm Remington Magnum, matching the case body’s exact dimensions.
• Drilled and threaded to accept a Lock-N-Load OAL gauge or comparator body.
• Reusable across many measurement sessions, not consumed like a fired case.

Frequently Asked Questions

Does this case include the OAL gauge? No, the gauge or comparator body that threads onto this case is sold separately.

Can this case be reused for other 7mm Remington Magnum rifles? Yes, the same modified case can be used to measure seating depth in any rifle chambered for that cartridge.

Buy the Hornady 7mm Remington Magnum Modified Case

Order the Hornady 7mm Remington Magnum Modified Case from our reloading equipment selection to start measuring seating depth to the lands. Ships fast from a Lubbock, TX gun shop.