Speer TMJ bullets are the smart choice for indoor ranges. Thanks to Uni-Cor technology that seals the entire lead core, they drastically reduce lead vapor and fouling for a cleaner, safer shooting experience compared to traditional FMJ rounds. The lead core is fully enclosed within a seamless jacket using Uni-Cor technology The design removes the elements that typically reduce accuracy in standard full metal jacket bullets Minimizes fouling and airborne lead Uniformity in bullet diameters and a consistent heel