Trac, If you loaded a rifle cartridge with a shotgun/pistol powder, you obviously were not following a loading manual. You may like to assemble your kid' s bike without reading the instructions, but you absolutely cannot do that with any type of reloading. That sort of foolishness will get you killed or maimed in short order. Spend the money to get Lyman Reloading manual as well as a bullet or powder manufacturer' s reloading manual such as Hornady or Hodgdon. Do start using your head while you still have one.