The Vital-Shok Trophy Copper Sabot Slug from Federal Premium delivers unmatched penetration and deadly expansion a combination of features that no other slug on the market can offer. Federal Premium is a leader in the ammunition field and this slug is just one example of the company's commitment to quality. In addition to delivering unmatched accuracy and performance the Vital-Shok Trophy Copper Sabot Slug from Federal Premium is designed with a sleek profile that also delivers a flatter trajectory than ever before. These slugs feature a polymer tip that delivers solid performance across the entire range of velocities.