 From 1894 to September 1899 a 220-grain jacketed bullet loading was issued using 40 grains of nitrocelluose powder, which developed some 40,000 psi and a muzzle velocity of in the Krag rifle and in the shorter carbine.In October 1899, after reviewing the experiences of the Spanish–American War, a new loading was developed for the .30 Army in an attempt to match the ballistics of the 7×57mm Mauser cartridge.The new loading increased the Krag rifle's muzzle velocity to 2,200 f/s at 45,000 psi.