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L.E. Wilson has been building precision reloading tools for generations, and this bushing neck sizing die for 300 Winchester Magnum is a favorite among handloaders who care about consistency. Instead of working the whole case, it sizes only the neck, and it does so using an interchangeable bushing you pick to match your brass. That means you decide how much neck tension your loads get, which is one of the biggest factors in building ammo that shoots tight groups.
The big advantage here is what this die leaves out. There's no conventional expander ball dragging back through the case neck, so you avoid the pull and distortion that can throw off concentricity. The result is straighter necks, more uniform tension, and brass that holds up through more firings. The die sizes the neck to roughly 3/16 of an inch from the case mouth, a setup a lot of precision loaders prefer because it leaves a portion of the neck untouched for better alignment in the chamber.
This is a hand die, built to be used with an arbor press rather than a threaded reloading press. You drop your case in, run it under the press, and the bushing does the sizing. It accepts both L.E. Wilson and Redding neck sizing bushings, so you've got plenty of options for fine tuning. To find your bushing size, measure the outside neck diameter of a loaded round and go a couple thousandths under, usually around .002 to .003 inches, depending on the neck tension you're after.
A couple things to know before you order. The sizing bushings are sold separately, so you'll want to measure your brass and pick the right one. This die is also designed to run with a neck die base, which is a separate piece as well. Once you've got the full setup dialed in, you've got a system that gives you real control over every round you build for your 300 Win Mag.
No, the sizing bushings are sold separately. You'll want to measure the outside neck diameter of a loaded round first, then choose a bushing that's a couple thousandths smaller to set your desired neck tension. The die accepts both L.E. Wilson and Redding neck sizing bushings, so you have plenty of options.
This is a hand die designed to be used with an arbor press rather than a standard threaded reloading press. It's also meant to run with a neck die base, which is a separate component. If you're already set up for other L.E. Wilson hand dies, you're good to go.
The conventional expander ball is eliminated on purpose. Without it, you avoid the drag and distortion that can pull a neck out of alignment, which improves concentricity and helps your brass last longer. The bushing sizes the neck from the outside instead, giving you cleaner, more uniform results.
The die sizes the neck to about 3/16 of an inch from the case mouth. Leaving part of the neck unsized is a technique many precision loaders prefer, since it helps the case center itself in the chamber for better alignment and consistency.
| UPC | 815145023636 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | SND-300WM |
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