If someone loads a firearm with the wrong-sized ammunition, what is likely to happen?

When a firearm is loaded with the wrong-sized ammunition, the most likely outcome is that there could be damage done to the firearm, and serious injury to the shooter. This occurs because firearms are designed specifically to operate with certain types of ammunition that fit securely in the chamber and function safely within the firearm's specifications. Using ammunition that is either too large or too small can lead to misfires, failures to eject, or even catastrophic failure, including ruptured barrels or explosions.

These types of malfunctions can create dangerous scenarios where fragments of the firearm or the explosive gases can injure the shooter or bystanders. Understanding the importance of using the correct ammunition is crucial for ensuring both personal safety and the functioning of the firearm.