HORNADY A7MMR 7MM REM LOCK-N-LOAD MODIFIED CASE

The Hornady Lock-N-Load Modified Case 7mm Rem Mag (A7MMR) is a brass tool case for reloaders who use Hornady Lock-N-Load O.A.L. and Precision Gauges to set exact bullet seating depth in 7mm Remington Magnum rifles. This A7MMR modified case for 7mm Rem Mag lets you match cartridge overall length to your rifle’s chamber instead of relying only on manual data.

Key Features

• Manufacturer part number: A7MMR
• Cartridge: 7mm Remington Magnum
• Case family: Hornady Lock-N-Load Modified Case A Series
• Intended use: for use with Hornady Lock-N-Load O.A.L. and Precision Gauges
• Material: brass modified case
• Case body: manufactured to 7mm Rem Mag chamber dimensions within SAAMI specs
• Neck: neck made approximately 0.002 inch oversize to accept the same bullets you intend to load
• Case head: fine threaded case head to attach directly to Lock-N-Load gauges and keep the case square in the chamber
• Quantity: one modified case per package

Special Features

• The A7MMR modified case uses a fine threaded case head so it screws securely into Hornady gauges and stays aligned while you move the bullet up to the lands.
• The slightly opened oversize neck lets a 7mm bullet slip into the case mouth easily while remaining concentric for smooth, repeatable overall length checks.
• Chamber-realistic construction gives you a more accurate seating-depth reference than generic test bodies or improvised cases.
• Interchangeable A Series modified cases like the A7MMR let you run one Hornady gauge body across many calibers by swapping cases.

Practical Benefits

• The Hornady Lock-N-Load Modified Case 7mm Rem Mag (A7MMR) gives you a repeatable way to find the cartridge length that fits your rifle’s freebore so you tune seating depth for accuracy instead of guessing from book lengths.
• Because the A7MMR case works with compatible straight and curved Hornady gauges, it fits many 7mm Rem Mag hunting and long-range rifles that accept the tool and lets you standardize your seating-depth process across more than one gun.
• The brass construction and oversize neck let you test with the same bullets you plan to load, so the distance to the lands you measure transfers cleanly to your seating die setup.