Before the FMJ, militaries used soft lead "minie balls" or simple lead rounds. Upon hitting a human body, these bullets would flatten, fragment, or "mushroom" dramatically. While devastating, surgeons of the late 19th century argued these wounds were unnecessarily cruel and difficult to treat.
Metal jacket bullets have several advantages, including: metal jacket bullet
The development of metal jacket bullets dates back to the late 19th century. In 1884, a French engineer named Paul Vieille invented the first metal jacket bullet, which was used in the French military. The design was later improved upon by other manufacturers, and metal jacket bullets became widely used in various military and civilian applications. Before the FMJ, militaries used soft lead "minie
| | Disadvantages | | :--- | :--- | | Reliable Feeding: The smooth, hard shape cycles flawlessly in automatic and semi-automatic pistols and rifles. | Over-Penetration: The bullet may pass through a target and hit an unintended person behind it. | | Clean Bore: Copper jackets reduce lead fouling, maintaining accuracy over long strings of fire. | Low Stopping Power: In self-defense, it fails to transfer energy quickly, potentially requiring multiple hits. | | Cost-Effective: Mass production of FMJ is cheaper than complex expanding bullets. | Reduced Fragmentation: It leaves a narrower wound cavity than hunting or defensive rounds. | | Legal for Warfare: Signatory nations to the Hague Convention are restricted to FMJ for standard infantry use. | Not for Hunting: Most states in the US ban FMJ for big game hunting because it is considered inhumane (does not kill quickly). | Metal jacket bullets have several advantages, including: The
Before the FMJ, militaries used soft lead "minie balls" or simple lead rounds. Upon hitting a human body, these bullets would flatten, fragment, or "mushroom" dramatically. While devastating, surgeons of the late 19th century argued these wounds were unnecessarily cruel and difficult to treat.
Metal jacket bullets have several advantages, including:
The development of metal jacket bullets dates back to the late 19th century. In 1884, a French engineer named Paul Vieille invented the first metal jacket bullet, which was used in the French military. The design was later improved upon by other manufacturers, and metal jacket bullets became widely used in various military and civilian applications.
| | Disadvantages | | :--- | :--- | | Reliable Feeding: The smooth, hard shape cycles flawlessly in automatic and semi-automatic pistols and rifles. | Over-Penetration: The bullet may pass through a target and hit an unintended person behind it. | | Clean Bore: Copper jackets reduce lead fouling, maintaining accuracy over long strings of fire. | Low Stopping Power: In self-defense, it fails to transfer energy quickly, potentially requiring multiple hits. | | Cost-Effective: Mass production of FMJ is cheaper than complex expanding bullets. | Reduced Fragmentation: It leaves a narrower wound cavity than hunting or defensive rounds. | | Legal for Warfare: Signatory nations to the Hague Convention are restricted to FMJ for standard infantry use. | Not for Hunting: Most states in the US ban FMJ for big game hunting because it is considered inhumane (does not kill quickly). |