How To Make Gun Powder The Old Fashioned Way in Less
#0183;#32;Black powder cartridges were typically (with exceptions) designated with bulletdiameterpowder charge. A .4570 was .45 bullet over 70 grains of FFg, .4440 was a .44 pushed by 40 grains of FFFg, etc. The .4570 Government ( .4570 Springfield) was developed at the Springfield Armory in 1873, and adhered to this custom.