Firing the Wrong Caliber
This video demonstrates the dangerous consequences of firing incorrect ammunition calibers in firearms. Experienced instructor Matt Carriker shows how .380 ACP in a 9mm firearm and 9mm in a .40 S&W firearm can lead to cycling failures and severe brass deformation due to improper headspacing. The experiment highlights the critical importance of using the correct ammunition for each firearm to ensure safe operation and prevent damage.













