Description
The Hornady Lock-N-Load Modified Case 280 Remington (A280) 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 280 Rem rifles. This A280 modified case for 280 Remington works with those gauges so you can match cartridge overall length to your rifles chamber instead of relying only on manual data.
Key Features
Manufacturer part number: A280
Cartridge: 280 Remington
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 SAAMI 280 Remington chamber dimensions
Neck: neck made approximately 0.002 inch oversize to accept the same bullets you plan to load
Case head: special fine thread at the 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 A280 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 oversize neck lets a 7mm bullet slip into the case mouth easily while maintaining light grip for smooth, repeatable movement during length checks.
Hornady builds the A280 to SAAMI specifications, giving you a chamber-realistic baseline for 280 Remington instead of a generic test body.
Interchangeable A Series modified cases like the A280 let you use one Hornady gauge body across many calibers by swapping cases.
Practical Benefits
The Hornady Lock-N-Load Modified Case 280 Remington (A280) gives you a repeatable way to find the cartridge length that fits your rifles freebore so you tune seating depth for accuracy rather than guessing from book lengths.
Because the A280 case works with compatible straight and curved Hornady gauges, it fits many 280 Rem hunting and target rifles that accept the tool and lets you standardize your process across multiple guns.
The brass construction and oversize neck let you test with the same bullets you intend to load, so the distance to the lands you measure transfers cleanly to your seating die setup.
If you load 280 Remington for hunting or general purpose rifles, the Hornady Lock-N-Load Modified Case 280 Remington (A280) is a practical choice that helps your handloads match your chamber and perform the way you built them.


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