LAPUA 4PH5001L 22-250 REMINGTON BRASS 50 CT.

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. This is not loaded ammunition.
Check your reloading manual or go to a powder manufactures website for load data.