RCBS Lube-A-Matic Bullet Sizing Die .311"

The RCBS Lube-A-Matic Bullet Sizing Die .311" is a precision reloading tool designed for ammunition manufacturers and serious handloaders who demand consistent, lubricated bullet sizing. Built by RCBS—the industry standard in reloading equipment for decades—this sizing die addresses a critical step in the ammunition production process where bullets must be uniformly sized and properly lubricated before loading into cartridge cases. Whether you're preparing match-grade rifle ammunition or high-volume pistol rounds, this die ensures each projectile meets exacting dimensional standards.

The .311" diameter specification makes this die compatible with common military rifle calibers including .7.62x54R and certain European rifle cartridges that require subsonic or standard velocity projectiles in that bore class. The Lube-A-Matic design integrates lubrication application directly into the sizing process, eliminating the need for separate lubrication steps and reducing handling time per round. The die features a durable steel construction with precision-machined internal dimensions that accommodate even hard bullet lubricants—critical when working with traditional lube formulations or modern polymer-coated designs that resist conventional sizing methods.

Handloaders and ammunition manufacturers benefit most from this sizing die when processing bulk quantities of .311" diameter bullets destined for rifle cartridges. Installation is straightforward—the die threads into standard RCBS reloading presses, making it compatible with existing progressive or single-stage press setups. At 0.19 lbs and compact dimensions (1.95 x 0.8 x 2.9 inches), the die occupies minimal bench space while delivering production-grade consistency. For competitive shooters, military ammunition builders, and reloaders focused on dimensional precision, the RCBS Lube-A-Matic Bullet Sizing Die .311" represents proven, time-tested reliability for mission-critical ammunition preparation.