The Hornady Lock-N-Load A Series Modified Case in .270 Winchester (Hornady part no. A270) is a precision gauge accessory built to SAAMI chamber specs. Paired with Hornady’s Lock-N-Load O.A.L. Gauge, it lets you measure bullet seating depth against your own rifle’s chamber instead of relying on a generic reloading-manual figure, which matters most for precision rifle and competition shooters chasing tight seating-depth tolerances. Find it in our reloading equipment lineup alongside the rest of Hornady’s measuring tools.

Key Specifications

• Ships at a listed weight of about 0.8 oz, light enough to add to any gauge or die order.
• Built for .270 Winchester brass.
• Manufactured to SAAMI chamber specifications for a consistent, drop-in fit.
• Pairs with the Hornady Lock-N-Load O.A.L. Gauge to measure bullet seating depth against your own rifle’s chamber.
• Lets you dial in seating depth specific to your rifle instead of relying on a generic reloading-manual number.
• Reusable indefinitely for this cartridge — it’s a measuring tool, not a fired or consumable case.
• One of Hornady’s A Series Modified Cases, sized to fit most factory chambers for this cartridge without hand-fitting.
• Not loaded ammunition — an inert measuring accessory with no powder or primer, so it ships and stores like any other reloading tool.
• Works alongside Hornady comparator inserts to take repeatable, headspace-referenced seating-depth readings.

Frequently Asked Questions

What is a Lock-N-Load Modified Case used for? It’s an inert gauge accessory that lets you measure bullet seating depth against your own rifle’s chamber, using Hornady’s Lock-N-Load O.A.L. Gauge or Precision gauge system.

What caliber is this modified case built for? It’s built for .270 Winchester.

Do I need to buy a new modified case for every rifle? No — one modified case works across any rifle chambered for that cartridge, since it’s sized to SAAMI chamber specs.

Buy the Hornady Lock-N-Load Modified Case, .270 Winchester

Order it from our Lubbock, Texas gun shop for fast, reliable shipping. Every caliber in Hornady’s Modified Case lineup is stocked together, so you can match your exact chambering.