Lapua World-class brass begins with high-quality raw materials and superior smelting and metallurgical competence. Throughout the production process, the focus on quality control is consistent with Lapua's exacting standards. Particular attention is paid to hardness, solidity and grain structure. All Lapua brass is tested to 30% overpressure according to Commission Internationale Permanente, the agency that oversees ammunition and component producers in Western Europe.
New, unprimed brass should always be resized before loading. This brass has undergone factory annealing which extends brass life, as a result of the annealing process the neck portion of the brass may be discolored until the case is cleaned. This is not loaded ammunition.