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If you handload 204 Ruger and you're after every last bit of accuracy out of your varmint rig, the L.E. Wilson Chamber Type Bullet Seater is the kind of tool that quietly earns its spot on the bench. Instead of working like a standard threaded die, this one holds the case completely still inside a chamber-fit die body while a close-fitting seating stem pushes the bullet straight down into the neck. That setup keeps the bullet and case locked in alignment through the whole stroke, which is exactly what you want when you're trying to shave runout down to the thousandths.
This is a hand die, not a press die. It runs on an arbor press or, in a pinch, a soft-faced mallet, so it's not meant to thread into your single stage or progressive. You set a primed and charged case into the die body, rest the bullet on the case mouth, lower the cap, and press. Because the case never moves and the bullet feeds through a snug stem, you get the consistent, concentric rounds that benchrest crowd has trusted from Wilson for decades. Seating depth is dialed in with the screw inside the cap, and each die is reamed to the correct dimensions here in the USA.
The 204 Ruger loves to run fast and flat, and small bore cartridges like this one are unforgiving when bullets go in crooked. This chamber type design is widely considered more accurate than a conventional 7/8-14 seater for that reason. It's a favorite for load development, range work, and competition, and it pairs naturally with a compact arbor press you can set up right at the bench or take to the line.
Smooth, repeatable technique is the whole game with an arbor setup, and this die rewards it. Keep your motion consistent from round to round and you'll see the kind of tight, uniform seating depth that shows up on paper.
No, this is a hand die and it's designed to run on an arbor press or with a soft-faced mallet. It doesn't thread into a conventional 7/8-14 single stage or progressive press. If you don't have an arbor press yet, a compact inline model is the ideal match and keeps the whole process smooth and repeatable.
This is the standard version, so seating depth is adjusted with the screw inside the cap rather than a micrometer top. It still delivers excellent precision once you dial it in and measure your rounds. If you want micrometer adjustment later, L.E. Wilson and Sinclair offer micrometer tops that convert these seaters.
The chamber type design captures both the case and bullet in alignment before the bullet is pushed straight into the neck by a close-fitting stem. That control is what gives you lower runout and better concentricity than a typical threaded seater. It's a big reason this style is a longtime favorite among benchrest and precision reloaders.
Start with well-prepped brass that's been properly sized and chamfered, then set the bullet on the case mouth and lower the die body over it before pressing. Use a smooth, even motion on the arbor press and repeat the same stroke every time. Consistent technique from round to round is what keeps your seating depth and runout tight.
| UPC | 815145021007 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BS20-RUG |
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