Announcing the new lead-free, high-performance GPM Quadra-Shock™ ammunition! GPM Quadra-Shock™ offers all the performance of existing non-frangible duty/sporting rounds but at a value-level price. Presently, market leaders in this market category offer bullets of varying hardness and density. TB Ammunition sells for 30-65% less than the leader with lower pressures and almost no copper fouling.TB Ammunition’s Quadra-Shock™ is all about performance and value. Some manufacturers are priced up to 300% more than similar Quadra-Shock™ rounds. TB Ammo