Always check choke tubes before shooting! Loose choke may lead to damage or injury. Here is what happened to my friend’s Beretta 1301 choke. It was loose and he simply blown it out!

Blown-Out Shotgun Choke Tube

Blown-Out Shotgun Choke Tube

Read more about chokes: Shotgun Chokes Explained (Cylinder, Improved Cylinder, Modified, Full)