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If you've been running .338 brass through several loading cycles, you've probably noticed the necks starting to thicken up. Brass flows forward over time, and that extra material inside the neck can crowd the chamber, spike pressures, and make your shooting less consistent. The L.E. Wilson 338 Caliber Inside Neck Reamer is the tool that fixes exactly that, shaving the inside of the case mouth back down to proper wall thickness so your rounds chamber clean and shoot the way they should.
This reamer cuts a finished diameter of 0.3405 to 0.341 inches, sized specifically for fired, un-sized .338 brass. It's important to understand this isn't a neck uniformer. It's built to reset brass that has accumulated material after repeated firings, returning the necks close to factory wall thickness and clearing out any donut that forms at the base of the neck from sizing or turning.
Wilson has been grinding reloading tools in Cashmere, Washington for generations, and this reamer is no exception. It's machined from hardened ground steel for a clean, consistent cut and the kind of longevity that keeps it working through case after case. The tool is designed to run in the L.E. Wilson Case Trimmer, dropping into place of the standard trimmer cutter so your trimmer does double duty.
Use it on brass that has actually been fired and not yet resized, since that's how the stock dimensions are intended to work. Seat your case firmly in the trimmer case holder so it doesn't spin during the cut, then take your time. Beyond tired brass, this reamer is also handy when forming wildcats from a parent case, opening up necks cleanly for a different caliber. It ships with a knob-style handle, so you can run it by hand with good feel and control.
It removes excess material from the inside of the case neck on brass that has been fired and reloaded multiple times. Over repeated cycles, brass flows forward and necks thicken, which can raise chamber pressures and hurt consistency. This reamer resets the neck wall back toward factory thickness so your .338 cases chamber properly and shoot more evenly.
It's designed to run in the L.E. Wilson Case Trimmer, replacing the standard trimmer cutter to convert the trimmer into a reaming setup. The reamer itself comes with a knob-style handle, but you'll need a Wilson trimmer and the matching case holder to put it to work on your brass.
Standard reamers like this one are sized for use on fired, un-sized cases. The stock dimensions assume you're working with brass that has been fired and not yet run back through a sizing die. Running it on brass in that state gives you the clean, consistent cut the tool is designed to produce.
Yes. Beyond cleaning up tired brass, these reamers are useful when forming wildcats from a parent case. They open and clean up the inside of the neck when you're reshaping brass for a different caliber, making it a versatile addition to a precision reloading bench.
| UPC | 815145023056 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | INR-033 |
| Caliber/Gauge | .338 Caliber |
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