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The L.E. Wilson 300 Win Mag Micrometer Top Bullet Seater Die is a chamber-type, inline seater built for folks who care about every thousandth of an inch. Instead of threading into a standard press, this die is used with an arbor press. The fired-size case drops into the die body and seats against the base, the bullet sets on the case mouth, and the bullet is pressed straight down into the neck. Because the case and bullet are fully captured and held in line, you get the kind of concentricity and consistency that bench and precision crowds have trusted Wilson for over the years.
The star of the show is the micrometer top. The scale is laser engraved and reads in .001" graduations, so you can nudge seating depth a hair at a time and come back to the same setting later without guesswork. For bigger jumps, the 3/8"-24 TPI threads in the cap let you make major adjustments quickly, then fine-tune from there. It is a genuinely nice setup for chasing your rifle's sweet spot at the bench or right at the range.
The die is machined from stainless steel, so it holds up to years of handling and shrugs off the wear that comes with regular use. One of the underrated perks of the inline design is that you can feel what is happening the entire time the bullet is being seated, which makes spotting inconsistent neck tension a lot easier. Pair it with a quality arbor press and your loads come together quickly and cleanly.
This die ships with the standard seating stem, which handles the majority of bullet shapes out there just fine. If you shoot VLD or long, pointy match bullets, Wilson offers a VLD stem separately that matches those ogives better. Made in the U.S.A., it is the type of tool you buy once and keep on the bench for the life of your .300 Win Mag.
Yes, this is a chamber-type inline die and is designed to be used with an arbor press rather than threaded into a standard reloading press. In a pinch you can seat bullets with a soft-faced mallet, but an arbor press gives you the best feel and most consistent results. Many folks pair it with a quality arbor press and run their seating right at the bench or the range.
The micrometer top lets you adjust seating depth in precise .001" increments and return to the same setting without guessing. The scale is laser engraved and easy to read, so chasing your rifle's preferred seating depth and recording it is straightforward. For larger changes, the 3/8"-24 TPI threads in the cap handle the big moves before you fine-tune.
It ships with the standard seating stem, which works well for the majority of bullet profiles. If you shoot VLD or long match bullets, Wilson offers a dedicated VLD stem separately that better matches those ogives. Most reloaders find the standard stem does the job for typical bullets.
The inline design fully captures the case and bullet and holds them in alignment as the bullet is pressed straight down into the neck, which tends to produce lower runout and more consistent seating. You also get to feel the entire seating stroke, making it easier to catch inconsistent neck tension. It is a favorite setup among precision and benchrest handloaders for exactly those reasons.
| UPC | 815145026323 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | S30-WMAG |
| Shipping Weight | 1.1 |
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