This article is about firearms projectiles. Unsourced material may be challenged and removed. This use of the term “bullet” when “cartridge” is intended in a conversation, leads to to the last bullet pdf free download when the components of a cartridge are discussed or intended. For example: 55 grain .
223 caliber bullets are of the same weight and caliber as 3. It had been used in China for hundreds of years. The cannon appeared in 1327. Later in 1364, the hand cannon appeared.
Early projectiles were made of stone. Stone was used in cannon and hand cannon. In cannon it was eventually found that stone would not penetrate stone fortifications which gave rise to the use of heavier metals for the round projectiles. Hand cannon projectiles developed in a similar fashion following the failure of stone from siege cannon. The first recorded instance of a metal ball from a hand cannon penetrating armor occurred in 1425.