HORNADY A4570 45-70 GOV`T LOCK N LOAD MODIFIED CASE

The Hornady Lock-N-Load Modified Case 45-70 Government (A4570) 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 45-70 Gov’t rifles. This A4570 modified case for 45-70 Gov’t lets you match cartridge overall length to your rifle’s chamber instead of relying only on manual data.

Key Features

• Manufacturer part number: A4570
• Cartridge: 45-70 Government
• 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 45-70 Government 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 A4570 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 .45-caliber 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 A4570 let you run one Hornady gauge body across many calibers by swapping cases.

Practical Benefits

• The Hornady Lock-N-Load Modified Case 45-70 Government (A4570) 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 A4570 case works with compatible straight and curved Hornady gauges, it fits many 45-70 lever, single-shot, and modern 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.