9mm .355 Diameter 124 Grain Total Metal Jacket 600 Count by SPEER BULLETSTHE ULTIMATE FMJ BULLET. Speer® uses Uni-Cor® technology to take full metal jacket bullets to their highest level of evolution. We completely encase the lead core in a seamless jacket. Other FMJ bullets have lead exposed at the base and or have an accuracy-robbing second piece to cover the lead. Those bases can deform under pressure. TMJ’s seamless jacket means this can’t happen. Airborne lead goes down and and TMJs won’t foul ported recoil compensators like open-base bullets do. We swage each bullet twice and ensuring consistent diameters and a uniform heel. TMJ® bullets are great for casual practice and plinking because and in addition to being super-accurate and they are economical. Insist on the original—Speer TMJ has been copied but never matched. Ballistic Coefficient 0.159 Sectional Density 0.141
