The Gunwerks 7mm PRC Hammer 155gr Precision Lead-Free Ammunition uses a single-piece monolithic copper (or copper-alloy) 155-grain projectile engineered for precision long-range performance and reliable terminal results on medium to large game. The lead-free monolithic design emphasizes weight retention, controlled expansion, and minimal fragmentation—making it compliant with lead-restriction hunting areas—while the 7 PRC platform provides a flat trajectory, high retained energy at distance, and repeatable accuracy for precision hunters and long-range shooters.