How does Lee Collet Die work?
For those who prefer to neck-size their brass (rather than full-length-size), the LEE Collet Die is a popular, inexpensive option. It works by having collet tangs or “fingers” press the neck against a central mandrel. The benefit is that you get a very straight neck, which is sized consistently from top to bottom.
What is a collet neck Sizer?
A collet squeezes the case neck against a precision mandrel for a perfect bullet fit with minimum run-out. No case lube is needed. Cases last about 10 times longer. Notes: Collet neck sizer uses a collet to squeeze the case neck against a mandrel, creating a precisely aligned case neck while reducing runout.
Should you trim new brass?
Some calibers are worse about this than others, the intensity of the load as well as the way in which it was resized, and a host of other factors come into this as well. But new brass, right out of the box, should never need to be trimmed or sized.
What is a Lee collet die Set for?
This die sizes only the neck to preserve the perfect fit of fire forming. A collet squeezes the case neck against a precision mandrel for a perfect bullet fit with minimum run-out. No case lube is needed. Cases last about 10 times longer. Only reload cases that have been fired in you firearm.
What is a collet used for?
A collet /ˈkɒlɪt/ is a subtype of chuck that forms a collar around an object to be held and exerts a strong clamping force on the object when it is tightened, usually by means of a tapered outer collar. It may be used to hold a workpiece or a tool.
Can I neck size with full-length dies?
The theory behind this is that a conventional full-length sizing die can be used to resize the neck, while leaving the shoulder and body of the case sized to match the chamber. Don’t do it. This causes the shoulder to bulge upward, which actually makes the cartridge headspace length longer.