Lee Case Length Gauge, 243 WSSM

The Lee Case Length Gauge, 243 WSSM (Lee part no. 90389) is a precise, quick way to trim and square the case mouth on 243 WSSM brass without a separate micrometer setup. It trims and squares the case mouth to a length of 1.650 to 1.670 inches. Lee builds this gauge to work with Lee’s case trimming tools, so it drops straight into your existing case-prep routine rather than requiring new equipment.

Key Specifications

• Chambered for 243 WSSM cases, setting the correct trim-to-length reference for that cartridge.
• Trims the case to length removes the guesswork of measuring case length by hand.
• Squares the case mouth gives an even, consistent mouth for straight bullet seating.
• Trims to 1.650-1.670 inches the correct case-mouth length range for this cartridge.
• Works with the Lee Cutter and Lock Stud drops into that existing case-trimming setup with no extra parts.
• Works with the Lee Zip Trim drops into that existing case-trimming setup with no extra parts.
• Includes a matching shell holder ships as a 2-piece set so the gauge is ready to use out of the box.
• Ships at 0.6188 lb a small, inexpensive gauge that is easy to keep on hand per caliber.
• Steel rifle-specific gauge body Lee’s steel construction variant built for rifle case dimensions.

Frequently Asked Questions

What does a case length gauge do? It sets the correct trim-to-length reference for a specific cartridge, so the case mouth gets trimmed and squared to the right dimension instead of by guesswork.

Do I need other tools to use it? Yes, it is designed to work with Lee’s case trimming tools such as the Cutter and Lock Stud, not as a standalone trimmer.

Buy the Lee Case Length Gauge, 243 WSSM

Order the Lee Case Length Gauge, 243 WSSM from our Lubbock, Texas gun shop for fast, reliable shipping straight to your reloading bench. Shop the rest of our reloading equipment for the rest of your case-prep bench.