How Can a Blank Misfire and Kill Someone?

Even a blank has to have something in it to keep the powder from falling out. This short guide explores the dangers of using blanks, the concept of misfires, and the importance of safety measures when handling blank cartridges. Blanks, in the context of firearms, are often used for training, reenactments, and movies. However, they can also be dangerous, especially at close range.

The Dangers of Blank Cartridges

Blanks are designed to mimic the look and sound of live rounds but contain no actual ammunition. They still have substantial kinetic energy due to the powder and gases involved in the firing process. Even a blank can pose a significant risk when discharged at close range. At reenactments or similar events, cannons firing blanks have safety zones around them, typically extending out to around 50 feet from the gun.

Understanding Misfires in Blank Cartridges

A term like "misfire" typically applies to live rounds that fail to function correctly when fired. However, a blank cartridge is not inherently misfired if it functions properly. In fact, blanks can be extremely dangerous if used incorrectly. A common scenario involving blanks occurs when a bullet is forced into the barrel, either manually or with a small powder charge. In such cases, the blank can dispel the bullet as it would with a live round.

The Mechanics of Blank Cartridges

Since a blank cartridge has no bullet in the chamber, there is nothing to resist the expanding gases when the trigger is pulled. This can cause issues with gas-operated and recoil-operated automatic firearms, leading to jamming. Standard semi-automatic firearms that you can purchase from stores often fail to function properly when shooting blanks because there is insufficient force behind the blank to cycle the mechanism that loads the next cartridge.

Solutions to Blanks-Related Issues

To address these issues, a blank firing adapter (BFA) is often used. This device is attached to the firearm's barrel to restrict the flow of gases and increase the pressure. It helps ensure the firearm functions correctly. However, it's important to note that movie guns cannot have real blank firing adapters due to their appearance, which would make the prop look implausible. Instead, a less obvious solution, such as welding a plug or a hollow piece of pipe inside the barrel, can be employed to achieve the same effect.

The Potential Risks of Prop Guns and Blank Firing Adapters

While these modifications improve the realism of blank-firing firearms, they are not without risks. Prop guns, especially in movies, may not be handled gently. They can be exposed to extreme temperatures, dropped, or even run over. Any such modifications can fail under these conditions, potentially leading to accidents. A loose or broken plug can act as a projectile, potentially causing injury.

It is crucial to handle blank cartridges and firearms with extreme caution to prevent injury or damage. If you are planning to use blanks, make sure to adhere to all safety guidelines and use appropriate blank firing adapters to ensure the firearm functions safely and realistically.