In today's world, there are places, areas, situations, where you can't or are strictly prohibited from using ammunition topped with lead bullets. Now, HSM has the answer. HSM is using the greatly respected Barnes Bullets, and developed specific loads to match the famed Barnes TSX bullet. Everything you need to overcome " restrictions" without sacrificing quality, accuracy, and performance. Again, as with all the HSM lines, the process, great components, and always extra care make for superior ammunition. This ammunition is new production, non-corrosive, in boxer-primed, reloadable brass cases.These revolutionary bullets from Barnes are made of 100% copper and contain no lead. When the bullet expands, four razor-sharp cutting petals are created, allowing the bullet to penetrate farther through tough bone and tissue. These bullets usually retain 100% of their original weight, making them a superb choice for hunting.