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When you're running .25 caliber brass through your RCBS sizing die, the expander/decapping unit is the part doing the quiet heavy lifting. This is RCBS part number 9806, a factory replacement assembly built to match your existing die so everything fits and functions the way it should. It carries the decapping pin that punches out the spent primer and the expander ball that sets your final neck inside diameter as the case draws back off the die.
Anything with moving parts and years of use will eventually show wear, and decapping units are no exception. Pins bend, pins break, and expander balls slowly loosen up over thousands of rounds. Rather than replacing your entire die set when one small piece gives out, you swap in this unit and keep rolling. It's the kind of part that's smart to have sitting in a drawer before you need it, especially mid-session when you don't want your reloading night cut short.
This one is set up for the .25 caliber family, which covers a wide spread of popular cartridges including 25 WSSM, 25-06 Remington, 250 Savage, 257 Roberts, 257 Weatherby Magnum, 25-20 Winchester, and 25-35 Winchester. Since RCBS die parts are caliber specific, this assembly is matched to that bore size so your neck tension stays consistent and your bullets seat straight.
The rod is machined to keep the expander ball concentric with the case, and that concentricity is what gives you even neck tension and straight-seated bullets, whether you're loading for the range or a hunt. Being a genuine RCBS replacement means you get a proper fit instead of guessing at aftermarket tolerances. For handloaders who put real volume through their .25 caliber dies, keeping a spare 9806 on hand is cheap insurance against a stalled reloading session.
It handles two jobs on a single stroke of your press. The decapping pin at the tip pushes the spent primer out through the flash hole, and the expander ball sets the final neck inside diameter as the case is drawn back out of the sizing die. That gives you consistent neck tension for straighter bullet seating.
Yes, this .25 caliber assembly covers the 25 WSSM along with other .25 bore cartridges like 25-06 Remington, 250 Savage, 257 Roberts, and 257 Weatherby Magnum. Keep in mind RCBS die parts are caliber specific and designed to fit RCBS sizing dies.
If your decapping pin bends or breaks, or your expander ball has worn out of spec, you can swap in this assembly and leave the rest of your die alone. It's a much simpler fix than buying a complete new die set. A lot of handloaders keep a spare on the bench so a damaged pin never ends their reloading session.
Yes, this is a factory RCBS replacement unit, part number 9806. Using the factory part ensures a correct fit and proper function in your RCBS dies, since the rod is machined to keep the expander ball concentric with the case for even neck tension.
| UPC | 076683098061 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 9806 |
| Shipping Weight | 0.0313 |
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