This review delves into the capabilities of the RCBS MatchMaster Precision Trimmer, an advanced electric tool developed in collaboration with Henderson Precision. Unlike manual trimmers, this device streamlines the case preparation process by performing trimming, chamfering, and deburring simultaneously. While it represents a significant investment, its efficiency and precision make it a compelling upgrade for dedicated reloaders, particularly those who frequently process rifle cartridges. The MatchMaster aims to transform a laborious task into a more efficient and less physically demanding one, improving the overall reloading experience and enhancing ammunition consistency.
A critical aspect of reloading, especially for rifle ammunition, is case trimming. The article elaborates on why this step is essential: the extreme pressures generated during firing cause brass cases to expand. Subsequently, when these cases are resized, the brass material is compressed forward, leading to an increase in overall length. If cases become too long, they can create excessive chamber pressure, posing a safety risk. For instance, the author observed that 6.5 Creedmoor cases exceeded the maximum recommended length after just one firing and resizing cycle. This emphasizes the necessity of regular trimming to maintain safe and consistent ammunition. Reloading manuals typically provide a maximum overall case length and a recommended trim-to length, which is crucial for safety and accuracy.
The MatchMaster Precision Trimmer stands out due to several innovative features. Its electric motor drives carbide blades, allowing for a three-way cutting action. A micrometer length adjustment system enables precise control over the trim length without requiring additional tools, simplifying the setup process. Furthermore, the trimmer incorporates a 360-degree shield to contain brass shavings and a plastic bin for easy collection of processed cases. The collet system is versatile, accommodating a wide range of popular rifle cartridges, with additional collet sizes available for broader compatibility. The cutting head's design, which includes adjustable set screws for the cutters and pilot, ensures straight and clean cuts. The pilot guides the case mouth, while separate cutters handle external trimming/chamfering and internal trimming/deburring.
The setup process, though requiring initial attention to detail, is designed to be straightforward. Adjusting the cutters to make contact with the case mouth is the most intricate part, necessitating careful adherence to instructions. Once correctly configured, the micrometer allows for fine-tuning the trim length. The author's testing of 50 6.5 Creedmoor cases demonstrated impressive consistency, with the device maintaining lengths within a tight tolerance. Achieving this level of precision requires a consistent touch when applying pressure to the handle, ensuring the case is fully seated in the collet. The integrated brass catcher further enhances the workflow, making the process smoother and more rhythmic. The author estimates that the Precision Trimmer reduced trimming time by approximately 75% while simultaneously improving the quality of the chamfer and deburr, and alleviating physical strain.
Despite its premium price point, approximately $700, the RCBS MatchMaster Precision Trimmer offers substantial benefits for serious reloaders. For competitive shooters, high-volume reloaders, or those who prioritize meticulous ammunition preparation, this tool is presented as a worthwhile investment. It not only significantly reduces the time spent on case trimming and enhances the consistency of ammunition but also transforms the reloading process into a more enjoyable and less tedious activity. By removing the drudgery often associated with manual trimming, it encourages more frequent reloading and practice, ultimately leading to greater confidence and improved accuracy.