Lee Precision Bullet Sizer and Punch Features The Lee Bullet Sizer and Punch brings cast bullets to a precise .253 diameter ensuring every bullet leaving the sizer matches the bore it is intended for. Sizing cast bullets corrects the slight variations that come out of a casting mold which is essential for consistent chamber fit and accurate shot placement downrange. Beyond sizing this punch also seats and crimps gas checks onto the base of the bullet in the same operation saving the reloader a separate step on the bench. This combination of sizing and gas check seating makes it a practical tool for anyone producing their own cast bullets in volume. This sizer and punch is designed to work specifically with the Breech Lock Bullet Sizer Kit and fits any Breech Lock enabled reloading press so it integrates directly into an existing Lee reloading setup without additional adapters. Because it is caliber specific at .253 there is no guesswork or adjustment once it is installed just repeatable consistent sizing on every pull of the press handle. Lee Liquid Alox lubricant a reloading press and the Breech Lock Loading Kit are required to use this punch and are sold separately so reloaders should plan to have that system in place first. For the cast bullet shooter already in the Lee Breech Lock ecosystem this sizer and punch is an affordable way to keep bullet quality consistent batch after batch. Lee Precision Bullet Sizer and Punch Specifications Manufacturer: Lee Precision Model: Bullet Sizer and Punch Item Type: Sizer and Punch Diameter: .253 Caliber: .253 Available At: GrabAGun