The World's Most Advanced Brass. Build the perfect load. That's long been the motto of handloaders loyal to Nosler brand premium bullets- and was the sole reason we developed NoslerCustom cartridge brass. Introduced in 2005, the NoslerCustom® cartridge brass line is ready to load. Manufactured with the traditional Nosler philosophy of uncompromising attention to detail, NoslerCustom cartridge brass is created to exact dimensional standards and tolerances using quality materials for maximum accuracy and consistency potential while extending case life. NoslerCustom brass also undergoes the rigorous quality control that premium Nosler bullets have experienced for over 60 years. Each piece of brass is completely prepped and ready to load. The case mouths have been chamfered and deburred. The flash holes are deburred and then checked for proper alignment. Each piece of brass is visually inspected at the factory and sealed in the box until you open them. NoslerCustom cartridge brass pieces are packaged in 25 and 50 count boxes. Together Nosler bullets and brass are the ingredients for the perfect load.