Find Your Caliber: Navigate for the ammo prices portion and pick the caliber you are serious about from your handgun, rifle, or shotgun types. Using a Centrefire rifle/gun, the center in the cartridge is struck through the firing pin, igniting the primer. Rimfire cartridges will be the minimum expensive rounds, https://tacticalrounds.com/product-tag/uplula-pistol-magazine-loader-review/