What can cause a shotgun to explode?

Using the wrong shotshell in your shotgun can lead to dangerous situations, including the possibility of the shotgun exploding. Each shotgun is designed to operate with specific types of shotshells, which are categorized by factors such as gauge, length, and load specifications. When a shotshell that is not suitable for a particular shotgun is used, it can generate excessive pressure in the chamber during firing. This excess pressure may exceed the structural limits of the firearm, potentially causing catastrophic failure, which can be likened to an explosion.

In contrast, a misfire refers to a failure of the cartridge to fire when the trigger is pulled; this situation typically does not involve the same dangers of pressure buildup associated with the wrong shotshell. Insufficient gunpowder in a shotshell would typically lead to a failure to achieve the intended performance without creating the explosive conditions of overpressure. Lastly, using the wrong choke does not impact the structural integrity of the shotgun itself but rather affects the shot pattern and overall shooting effectiveness.