Description
Wilson has been building this trimmer since 1936, and once you run a few cases through it you understand why it hasn't really needed to change. Instead of gripping the case rim like most trimmers, the Wilson supports the case body inside a cartridge-specific holder that mimics a rifle chamber. That holder rides on twin rails that keep the cutter and the case in perfect axial alignment, so every cut comes out square and to the same length. Taking the case rim out of the equation is the whole trick behind how consistent this thing trims.
What Sets the Wilson Case Trimmer Kit Apart
This is the stainless steel version with the micrometer stop, which lets you fine-tune trim length in .001 inch increments. The stop screw locks your setting so it won't drift mid-session, and plenty of folks who run one report holding under a thousandth of variation across hundreds of cases. The kit covers .17 through .45 caliber cases, and a 304 stainless steel crank handle is included. It's built in the U.S.A. and finished to last, the kind of tool people hang onto for decades.
Getting the Most From Your Wilson Trimmer
Setup is straightforward. Drop a case into the matching holder, tap it lightly so it seats on its body taper, set it on the rails, and spin the cutter while keeping the case base against the stop. Run a test case or two, adjust the micrometer, and once you're dialed in, lock it down. The included stand mounts the trimmer to your bench, and the case holder clamp steadies the holder while you cut. You can also swap the crank for an optional power adapter if you'd rather drive it with a screwdriver.
A Note on Case Holders
Case holders are caliber specific and sold separately, so you'll want to grab the correct holder for whatever you're loading. One nice part of the system is that a single holder often covers a whole family of cartridges sharing the same parent case. The .17 caliber cutter is also a separate item since those smaller case mouths need their own cutter head.
Key Specifications
- Manufacturer: L.E. Wilson
- Manufacturer Part Number: CT-SSKIT
- UPC: 857949005289
- Caliber Range: .17 – .45 caliber
- Head Material: Stainless Steel
- Length Adjustment: Micrometer, .001" increments
- Handle: 304 Stainless Steel Crank Handle
- Mounting: Includes stand; also vise compatible
- Power Adapter: Compatible (adapter sold separately)
- Case Holders: Caliber specific, sold separately
- Country of Origin: Made in the U.S.A.
- Shipping Weight: 2.9 lbs
What’s Included
- L.E. Wilson stainless steel case trimmer with micrometer stop
- Cutter
- 304 stainless steel crank handle
- Wilson logo stand
- Stainless steel case holder clamp
- Hex wrenches for setup
Frequently Asked Questions
Do I need case holders to use the Wilson Case Trimmer Kit?
Yes. The trimmer holds your brass inside a cartridge-specific case holder that simulates a rifle chamber, and those holders are sold separately. The upside is that one holder typically works for a whole family of cartridges built on the same parent case, so a .30-06 holder, for example, covers cases necked up or down from that parent.
What does the micrometer adjustment actually do?
It lets you fine-tune your trim-to length in .001 inch increments, then lock it in with the stop screw so your setting doesn't move during a long session. Users commonly report holding under a thousandth of variation across hundreds of cases once they're dialed in.
Will this trim .17 caliber brass out of the box?
The kit covers the .17 to .45 caliber range, but .17 caliber cases have a smaller case mouth that requires a dedicated cutter head designed for that diameter, which is not included. For .17 caliber work you'll want to add that separate cutter along with the correct case holder.
Does the trimmer have to be mounted, or can I use a power tool with it?
The included stand lets you mount it to a bench, and it can also be held in a soft-jaw vise if you prefer. If you'd rather not hand-crank, the crank handle can be swapped for an optional power adapter so you can spin the cutter with a power screwdriver.




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