Redding Tapered Size Buttons are designed for Redding Sizing Dies to allow for easy expansion of case necks on bottleneck cartridges. They are also often used when making custom cases that require the parent cartridge neck size to be opened up to a larger caliber.
Function: Tapered Sizing Button for taking 375 Caliber cases up to 421 Caliber Cases (404 Jeffery, etc.)
Notes: Tapered design is made for expanding the neck of bottleneck cases up to the desired size
