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The L.E. Wilson 300 WSM Bushing Full Length Die gives you full-length control over your Winchester Short Magnum brass with one big upgrade over a standard die: swappable neck bushings. It sizes the case body and shoulder on every pass to keep your rounds chambering smoothly, while the bushing you drop in sets exactly how much the neck gets squeezed down. Instead of an expander ball dragging back through the neck, you pick a bushing that matches your brass and bullet combo, which keeps runout low and your brass working less. The die threads into any standard 7/8 inch press, so it fits right into the setup you already own.
Neck tension is one of the quietest things affecting your groups, and this is where a bushing die earns its keep. You choose a bushing based on your actual loaded round rather than relying on a fixed internal dimension. A good starting point is to measure the neck diameter of a loaded cartridge, then subtract about .002 to .003 inches, and that number is your bushing size. Wilson's own bushings are the natural match, and Redding bushings will also fit if that's what you've got on the bench. One nice detail worth knowing: these Wilson full-length bushing dies are designed to leave roughly 3/16 inch at the base of the neck unsized, a trick a lot of precision loaders swear by for better alignment.
This die is made from high-quality, heat-treated steel and hardened to L.E. Wilson's specs, which run harder than a Grade 8 bolt. That means consistent dimensions load after load and a tool that holds up for the long haul. It includes an adjustable-depth decapping rod plus a spare decapping punch, so you've got a backup ready to go. Pair it with a Wilson case gage to set your shoulder bump correctly and keep from overworking your brass, and you've got a sizing station dialed in for repeatable, accurate 300 WSM reloads.
No, the neck bushings are sold separately so you can match the exact neck tension you want for your brass and bullet combination. Wilson's own neck sizing bushings are the natural pairing, though Redding bushings also fit this die. Plan on picking up at least one bushing sized for your loaded rounds before your first sizing session.
The easiest method is to measure the neck diameter of a loaded round where the bullet sits, then subtract about .002 to .003 inches, and that's your bushing size. For example, a loaded neck measuring .268 would call for roughly a .266 bushing. It's worth measuring several loaded rounds and using the average for the most consistent results.
Yes. The 300 WSM bushing full length die threads into any standard 7/8 inch reloading press, so it drops right into the setup most handloaders already run. No special arbor press is required for this sizing die.
A bushing die lets you control neck tension without an expander ball dragging back through the case neck, which keeps runout down and reduces how hard your brass gets worked. You still get full body and shoulder sizing for reliable chambering. Many precision loaders find this adds up to more consistent bullet release and tighter groups, especially at longer range.
| UPC | 815145026019 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | FLD-300WSM |
| Shipping Weight | 0.6 |
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