Lyman H&I Bullet Sizing Die .310"

The Lyman H&I Bullet Sizing Die .310" is a precision reloading component designed for shooters and handloaders who demand consistent, repeatable bullet performance. Built for centerfire rifle and handgun ammunition, this sizing die allows reloaders to standardize bullet diameter to exact specifications, ensuring reliable feeding, accuracy, and chamber fit across multiple firearms and shooting applications. Whether you're preparing match-grade ammunition or managing high-volume military and law enforcement training loads, the .310" sizing die addresses the critical need for bullet uniformity.

This die features hardened interior surfaces and improved 90-degree hole spacing geometry, which stabilizes the bullet during the sizing process and minimizes scoring or dimensional variation. The hardened construction resists wear under repeated use, essential for high-volume reloaders and armory operations. The .310" diameter accommodates popular cartridges including 7.62×54R, 7.62×25 Tokarev, and other metric rifle rounds, making it ideal for military surplus ammunition processing or competition handloading. Compact dimensions (2.7 × 1.25 × 5.05 inches) and lightweight design (0.16 lbs) allow for convenient storage and portability in reloading workshops or mobile ammunition labs.

Law enforcement, military armorer, and civilian reloaders benefit most from this tool when managing large quantities of mixed-source bullets or non-standard ammunition stocks. The sizing die integrates seamlessly into standard reloading presses, requiring no special equipment beyond a standard arbor press or dedicated sizing station. Proper use extends ammunition shelf life, reduces feeding malfunctions, and improves group consistency downrange—critical factors in duty ammunition preparation and precision rifle training.