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If you're loading for the .264 Winchester Magnum, a good crimp can be the difference between flyers and tight groups, and that's exactly where this Lee Precision die earns its keep. It uses a collet system that squeezes the case mouth into a clean, segmented straight crimp, the same style you see on quality factory ammo. Because the collet compresses inward from the sides rather than forcing the brass down from the top, it holds the bullet firmly without the risk of buckling the case or bulging the shoulder that can plague old-school roll crimp setups.
This is the collet-style rifle version, not a carbide handgun die. As the shell holder pushes the cartridge up, the collet fingers close around the last bit of the case neck and form the crimp. One of the big draws here is that your bullets don't even need a cannelure or crimp groove. The die is powerful enough to form one, and it keeps the crimp consistent even when your case lengths vary a touch. Crimping is handled as its own separate step, so it won't interfere with your seating depth.
A firm crimp means pressure has to build higher before the bullet starts moving, which tends to smooth out your pressure curve and tighten velocity spread. That matters a lot with a big belted magnum like the .264 Win Mag, especially for hunting loads that need to hold together through recoil, feeding, and rough handling in the field. It's a popular pick for a cartridge that doesn't always get a lot of aftermarket love.
Installation is about as simple as reloading gear gets. The die uses a standard 7/8-14 thread, so it threads right into any common single-stage or turret press. You screw it in, run a sized case up to set it, and back off from there to dial in your crimp. Made from steel and built to take years of use, it's an easy addition to a .264 Winchester Magnum die collection.
No, they don't. The collet is strong enough to form its own crimp even on bullets without a cannelure or crimp groove. Tests from Lee show that smooth-sided bullets can actually shoot more accurately once they're crimped in place with this die.
No, this is the collet-style rifle Factory Crimp Die and it is not carbide. The collet fingers squeeze the case mouth inward to form the crimp rather than relying on a carbide sizing ring like the pistol versions do. For rifle cartridges like the .264 Win Mag, this collet design is the way Lee builds the Factory Crimp Die.
It should fit just about any standard press. The die uses the common 7/8-14 thread found on single-stage, turret, and progressive presses from the major brands. You just thread it in and set it a bit past the shell holder to dial in your crimp.
That's one of the main reasons people like it. Because the collet compresses the case mouth from the sides instead of pushing down from the top, it's very hard to buckle the case or bulge the shoulder the way a standard roll crimp die can. It also handles minor variations in case length without throwing off the crimp.
| UPC | 734307912475 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 91247 |
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