Lee Precision Collet Style Crimp Die Features The Lee Collet Style Crimp Die for .360 Buckhammer uses a collet mechanism that squeezes the case mouth firmly into the bullet applying more consistent pressure than a traditional taper or roll crimp die. Because this crimp requires a higher start pressure before the bullet begins to move down the bore the resulting pressure curve is more uniform shot to shot. This translates directly into tighter velocity spreads and improved accuracy something serious reloaders of this difficult to crimp cartridge will appreciate. Testing has shown that even bullets lacking a dedicated crimp groove can be crimped effectively since the collet s clamping force is strong enough to form one. This die is not carbide so it works purely through the mechanical crimping action of its collet design rather than resizing the case body. It fits any standard 7/8 inch-14 thread reloading press which covers the vast majority of single stage and turret presses on the market. A shellholder is not included and must be purchased separately to match the reloader s press. For .360 Buckhammer handloaders looking to tighten up groups and reduce shot to shot variation this crimp die is a straightforward upgrade to an existing die set. Lee Precision Collet Style Crimp Die Specifications Manufacturer: Lee Precision Model: Collet Style Crimp Die Caliber: .360 Buckhammer Die Type: Crimp Die Weight: 0.31 lbs Available At: GrabAGun