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The L.E. Wilson Bushing Full Length Sizing Die in .300 Win Mag is built for handloaders who care about repeatable results and want real say over neck tension. Instead of relying on a fixed neck dimension and an expander ball dragging through the case neck, this die uses interchangeable bushings so you set bullet grip to your exact spec. In a single pull of the handle it sizes the case body, sets the shoulder back for correct headspace, and deprimes the case. It threads into any standard 7/8-inch reloading press, so it drops right into the setup you already own.
Wilson machines this die from steel hardened to their own specifications, which they note runs harder than a Grade 8 bolt. That hardness is what keeps the sizing dimensions holding true pull after pull, season after season. The die ships with an adjustable depth decapping rod plus a spare decapping punch, and it does not use an expander, which means less working of the brass and longer case life on your .300 Win Mag loads.
Neck tension is one of the biggest levers you have for consistency, and this is where the bushing design earns its keep. Bushings are sold separately so you can match the exact amount of grip your brass and bullet combo wants. A good starting point is measuring the neck diameter of a loaded round and subtracting .002 to .003 inch to find your bushing size. Reloaders who want a firmer hold or who run harder brass with more springback simply step down to the next smaller bushing. There's also a handy trick built in: flipping the bushing so the markings face down inside the die gives you a slightly tighter grip without buying another bushing.
Setup rewards a little patience. Wilson recommends pairing this die with a case gauge so you can set your shoulder bump precisely and avoid overworking the brass, which keeps your rounds chambering smoothly and your case life long. Many precision handloaders find the bushing approach cuts down on neck runout since the brass isn't being stretched back open by an expander. For anyone loading .300 Win Mag for long range hunting or match work, this is a serious tool that gives you the kind of control the factory die set just can't.
No, bushings are sold separately so you can match the exact neck tension your brass and bullet combo calls for. This lets you build a set of bushings over time and fine-tune bullet grip without buying a whole new die. The die itself ships with an adjustable depth decapping rod and a spare decapping punch.
The simplest method is to measure the neck diameter of a loaded round where the bullet sits, then subtract .002 to .003 inch to get your bushing size. You can also measure neck wall thickness, double it, add your bullet diameter, then subtract that same .002 to .003. If you want a firmer hold or run harder brass that springs back more, step down to the next smaller bushing.
Yes, it threads into any standard 7/8-14 reloading press, so it fits the single-stage or turret press you likely already have. It uses a Wilson lock nut to hold your setting once you've dialed it in. There's nothing proprietary needed to run it.
Yes. With the bushing removed, you can run it as a body die to size the case body and push the shoulder back without touching the neck. That flexibility makes it handy when you only need to correct headspace on fired brass.
| UPC | 815145026002 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | FLD-3WMG |
| Shipping Weight | 0.7 |
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