Magnum Research has developed a new, fast, powerful .44 caliber pistol cartridge. The .429 DE (Desert Eagle) was designed to enhance the famous and powerful Desert Eagle platform. This cartridge has a 25% velocity increase and a 45% energy increase over a 44 Mag (240, 6 barrel). Based on the famous .50 AE cartridge, the .429 DE is made with Starline brass and loaded by HSM in Montana with Sierra bullets.