Lee Bullet Sizer & Punch .358"

The Lee Bullet Sizer & Punch .358" (model 91520) is a precision reloading tool designed to size cast bullets and seat gas checks with accuracy. This specialized die works in conjunction with Lee's Breech Lock system, fitting any Breech Lock-enabled reloading press. For handloaders working with cast projectiles, particularly those using gas check technology, this tool delivers the consistency required for reliable, accurate ammunition production across multiple calibers using .358" diameter bullets.

The .358" sizing specification accommodates popular cartridges including .357 Magnum, .358 Winchester, and related calibers. Proper bullet sizing is critical to handloading success—undersized bullets may rattle in the case, creating inconsistent pressures and velocity spread, while properly sized projectiles ensure uniform seating depth and consistent performance. The integrated punch mechanism seats and crimps gas checks simultaneously, streamlining the prep phase of the loading sequence. Lee Liquid Alox lubricant, a Breech Lock Loading Kit, and a compatible reloading press are required separately for full functionality.

This tool is built for serious handloaders who cast their own bullets or source quality cast projectiles for revolver and rifle loading. Cast bullet reloading demands precision sizing to achieve the accuracy and velocity stability that factory ammunition provides. Whether working up .357 Magnum loads for defensive or competitive use, or preparing rifle rounds for hunting or target work, the Lee Bullet Sizer & Punch ensures uniform bullet diameter and proper gas check seating—two variables that directly impact round-to-round performance and shot grouping.