Sep 22, 2026

US12742625 - Case length trimmer (CLT) with micro-adjustment tool and method of using same

A Case Length Trimmer (CLT) combines three cutting features in a single hand tool with independent micro adjustability. The CLT operates to cut a ammunition casing to an overall length and chamfers the inside and outside case mouth diameters. Customization with multiple pilots and flash hole pin sizes maintain a consistent cut. The CLT uses these components to set actual overall case length for accuracy. The CLT can also utilizing a Micro-Adjustment Tool (MAT) for allowing precision adjustment of each parameter. These tools are can be used by individually and collectively adding a new level of consistency and precision to ammunition reloading.

Assignee: K&M Shooting Products, LLC
Inventors: Roger G. Miller, Jr., David A. Allen, Brady C. Haas
Filing date: 2024-12-06

ammunitionreloadingtool

The Case Length Trimmer (CLT) is a versatile hand tool designed for reloading ammunition, featuring independent micro-adjustability for precise cutting and chamfering of casing ends. It incorporates multiple cutting components and customization options to enhance consistency and accuracy in ammunition preparation.

Claim 1

1 . A case length trimmer (CLT) tool for use in reloading firearm ammunition comprising: an end cutter for cutting an end of an ammunition casing; an inside chamfer cutter for shaping an inside surface of the ammunition casing; an outside chamfer cutter for shaping an outside surface of the ammunition casing; a pilot having case neck stem extending therefrom positioned between a plurality of fasteners, for guiding a case neck over the tool such that the stem is configured to extend through a primer hole in the casing; a case length hard-stop; and wherein the end cutter, inside chamfer cutter, outside chamfer cutter are each independently adjustable and, where the CLT tool is rotated in order to allow the end cutter, inside chamfer cutter and outside chamfer cutter to machine the ammunition casing to a predetermined overall length in preparation for a firearm ammunition reload. an end cutter for cutting an end of an ammunition casing; an inside chamfer cutter for shaping an inside surface of the ammunition casing; an outside chamfer cutter for shaping an outside surface of the ammunition casing; a pilot having case neck stem extending therefrom positioned between a plurality of fasteners, for guiding a case neck over the tool such that the stem is configured to extend through a primer hole in the casing; a case length hard-stop; and wherein the end cutter, inside chamfer cutter, outside chamfer cutter are each independently adjustable and, where the CLT tool is rotated in order to allow the end cutter, inside chamfer cutter and outside chamfer cutter to machine the ammunition casing to a predetermined overall length in preparation for a firearm ammunition reload.

Google Patents

https://patents.google.com/patent/US12742625

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12742625