Google, or the box, but the best thing about the Shooter app is it has the information is stored in its memory and you don't have to manually put it in. After you have loaded the firearm, then the next screen is the ammo screen. If you are shooting factory ammo go the lower left corner under "add ammo" and select your ammo. If you are hand loading then go to the lower right corner to the "bullet library" select your bullet (brand, caliber, weight) and presto it auto loads the information for you. This is assuming the android version, the I phone version is slightly different but same principle.
