Magnum primers and medium-burning powders like Varget and 4350 produced the best performance. Build the perfect load has long been the mantra of Nosler brand bullet enthusiasts–and it is the sole reason we developed Nosler® cartridge brass. The Nosler® cartridge brass line, which was introduced in 2005, is ready to load. Nosler® cartridge brass is manufactured with the traditional Nosler philosophy of uncompromising attention to detail, to exact dimensional standards and tolerances, using quality materials for maximum accuracy and consistency potential while extending case life. Nosler® brass is also subjected to the same stringent quality control that premium Nosler bullets have been subjected to for over 60 years.