These rounds are ideal for target shooting since they do not expand much when hitting their target. The down side to FMJ in self defense is the risk of unintended impact further down the range. Penetration could hit an innocent bystander in a parking lot or penetrate through a wall, hitting a loved one in the middle of the night. A Hollow point round is an expanding bullet that has a pit or hollowed out tip.
These rounds are preferred by hunters and in self defense situation because they expand upon impact. When hollow point bullets hit the target, the hollow tip allows the bullet to deform making it look more like a mushroom , slowing the bullet, and giving more stopping power. It also causes more catastrophic damage to your intended target. FMJ Ammo is frequently made of a soft lead core built inside of a shell made up of hard metal such as cupronickel or gilding metal.
These bullets maintain their composure and trajectory better than almost any others on the market. FMJ bullets are incredibly strong and have greater penetration capacity and less expansion in soft tissue. But there is a big pros of FMJ that these bullets do not expand upon hitting their target that makes them ideal for target shooting. Simply, a hollow point ammunition is an expanding bullet that has a pit or hollowed out tip or full metal jacket. This ammunition is mostly preferred by hunters and those in defensive situations because it expands upon impact.
Hollow point rounds have a hollowed out center. When a hollow point strikes its target, the hollow causes the bullet to deform. Sometimes, ammo which completely jackets the lead including the base of the cartridge is referred to as TMJ - Total Metal Jacket - ammunition.
TMJ ammo reduces airborne lead exposure and is sometimes required in shooting ranges or areas with lead restrictions. In many cases, this ammo uses a steel jacket rather than copper. The steel jacket may then be plated with copper, nickel, zinc or similar metals to provide corrosion resistance and somewhat increase lubricity.
The plating on bimetal bullets is often quite thin, and bi-metal bullets with a steel jacket are known to be harder on barrel life in the long term. Many military or military-type barrels are forged and treated either with a chrome lining or a more modern treatment such as black nitride which will increase the hardness and wear resistance of the barrel. Military designs are also typically built to allow barrels and other parts to be replaced as they wear.
This is something to be aware of when selecting a bullet. Also be aware that bullets containing steel are frequently banned from shooting ranges, especially indoor shooting ranges. Some ammo which appears to be copper-jacketed FMJ has steel and will attract a magnet, and will be banned from these locations.
One common example is Federal XM80C , a 7. Reduce lead spalling and build-up in the barrel and operating system of the gun. Register Don't have an account? Full metal jacket bullet. Edit source History Talk 0. Yugo 7. Steel-cased German 7. Three recovered 7. From left to right: 7. Guns Magazine.
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