Lee Precision's 0.311" diameter Bullet Sizing Kit is designed for easy and fast sizing of cast bullets and fits any single stage reloading press with standard 7-8x14" threads.
The kit automatically seats and crimps gas checks and does not require special nose punches or top punches for molds.
To use, bullets should be lubricated, then the gas check is placed on the base and the bullet is sized through the die, crimping the gas check in the process.