RCBS Case Neck Turner with Auto Feed

The RCBS Case Neck Turner with Auto Feed is a precision reloading tool designed to eliminate excessive and uneven neck thickness in rifle cartridge cases. This dual-function turner addresses one of the most common sources of inconsistency in handloaded ammunition—case neck variation—by machining both the inside and outside neck surfaces simultaneously. The auto feed attachment ensures consistent tool advancement across the case neck, producing uniform wall thickness that directly improves bullet seating concentricity and reduces vertical shot dispersion at distance.

The tool operates by guiding a precision cutter over sized cartridge cases, supported by a special pilot/reamer that maintains alignment and prevents chattering. The simultaneous inside-and-outside turning action removes material in a single pass, reducing setup time and the risk of centering errors. The auto feed attachment is compatible with RCBS Case Trimmer 2 and Trim Pro Manual Case Trimmer platforms, allowing integration into existing reloading stations. The compact 2.1 x 2.1 x 3.6-inch footprint and 0.84-pound weight make it suitable for benchtop or press-mounted use. Note that this tool is not compatible with the Trim Pro Power Case Trimmer model.

Precision reloaders targeting match-grade ammunition performance rely on the RCBS Case Neck Turner to control the primary variables affecting cartridge concentricity. Competitive shooters, long-range hunters, and ammunition developers who measure case neck runout and seek sub-0.5-minute-of-angle accuracy find that uniform neck thickness directly correlates with improved precision. The tool is essential for those running tight chamber tolerances or employing custom full-length sizing dies where neck dimension control becomes critical to consistency. RCBS remains the standard reference for case preparation equipment in the reloading industry.