Forster Oversize E-Z Expander Ball diameter

Forster Oversize E-Z Expander Ball diameter. Simple use the Forster Oversize E-Z Expander Ball. Insert the ball in the expander ball notch until the die expands enough to pass the case into the expander chamber. If the case is too tight release the screw and let the expander ball fall out the backside of the die. This releases the backside of the case mouth against the expander ball for a nice smooth chamber expansion. Since the case is already at full length the ball actually moves forward dur