The Hornady Lock-N-Load Modified Case, B Series .204 Ruger (Hornady part no. B204) is a specially prepared .204 Ruger case built to work with Hornady Lock-N-Load Precision gauges rather than being loaded and fired like standard brass. A fine thread at the case head lets it screw onto the gauge and stay perfectly square for an accurate reading. The neck is machined perfectly round and opened slightly beyond standard dimension so a bullet slips in smoothly and concentrically, which keeps the gauge measurement honest. Anyone measuring headspace on .204 Ruger needs the case that matches the chamber, and this is it.

Key Specifications

• This modified case is prepared specifically for .204 Ruger, matching your chamber for an accurate gauge reading.
• A fine thread at the case head lets it screw onto a Lock-N-Load Precision gauge and stay square during use.
• The neck is machined perfectly round for consistent, repeatable gauge readings.
• The neck is opened to a .002-inch oversized diameter so a bullet slips in smoothly and concentrically.
• It is part of Hornady’s B Series of interchangeable modified cases covering common chamberings.

Frequently Asked Questions

Can I load and fire this .204 Ruger modified case like normal brass? No. It is built specifically to thread onto a Lock-N-Load Precision gauge, not to be loaded and fired.

Why is the case neck oversized? The .002-inch oversized, perfectly round neck lets a bullet slip in smoothly and concentrically for an accurate gauge reading.

Buy the Hornady Lock-N-Load Modified Case, B Series .204 Ruger

Order it from our Lubbock, Texas gun shop for fast, reliable shipping. Find the Hornady Lock-N-Load Modified Case, B Series .204 Ruger in Hornady‘s reloading brass lineup and get an accurate .204 Ruger gauge reading on your next batch.