A collet squeezes the case neck against a precision mandrel for perfect bullet fit with minimum run-out. Maximum accuracy is usually achieved by seating the bullet out far enough to touch or almost touch the rifling. This provides the shot start pressure normally supplied by the crimp.
|Type||Collet Neck Sizing Rifle Die|
|Series||Neck Die Only|
|Caliber||300 winchester magnum|
Determined at checkout.