Speer TMJ Handgun Bullets .38 Spl/.357 Mag .357" 158 gr TMJ-FN 100/ct

Speer TMJ Handgun Bullets .38 Special/.357 Magnum .357" 158 gr TMJ-FN are precision-engineered projectiles designed for shooters who demand consistent performance across target, training, and duty applications. These Total Metal Jacket (TMJ) rounds feature Uni-Cor technology—a proprietary manufacturing process where molten lead is poured directly into the jacket, creating complete lead encasement with a seamless, flawless jacket. This construction eliminates base deformation under firing pressure and ensures reliable feeding and function across all .357 Magnum and .38 Special firearms.

The 158-grain weight in .357" diameter delivers balanced ballistics for medium-power rifle and pistol use. TMJ construction differs from traditional jacketed bullets by fully encasing the lead core, reducing airborne lead exposure during high-volume range sessions—a critical consideration for indoor shooting facilities and regular training environments. The flat-nose profile optimizes bullet stability and consistency, particularly important when shooting cast-lead ammunition through cylinders or semi-automatic actions where nose shape affects chambering and ejection reliability. At 100 rounds per box, this quantity supports extended training cycles and allows shooters to maintain supply consistency across multiple shooting sessions.

This product serves handloaders, range shooters, and defensive trainers working with .38 Special revolvers, .357 Magnum revolvers, and .357 Magnum semi-automatic platforms. TMJ bullets are favored by shooters who reload ammunition for cost control and performance tuning, as well as by facilities requiring reduced lead exposure compliance. Speer's established reputation in component manufacturing ensures lot-to-lot consistency in weight, dimension, and jacket integrity—essential for handloaders building match-grade or duty-grade rounds where pressure curve predictability matters.