Shotgun choke tubes alter the pattern of the shot that comes out of the gun when the trigger is pulled. Different choke tube styles are used to accomplish different patterns, so hunters often swap out choke tubes. Occasionally, choke tubes get lodged in a shotgun's barrel.
Items you will need
Choke tube wrench
Hair dryer
Penetrating oil
Vice grips
Make sure the shotgun is not loaded. If possible, remove the barrel from the shotgun.
Use a choke tube wrench to try and turn the choke slightly clockwise. This will tighten the tube, but may also help loosen it.
Turn the choke tube counter-clockwise with a choke tube wrench. Try and remove the choke tube.
Heat the gun barrel around the choke tube with a hair dryer. Use a choke tube wrench and turn it counter-clockwise.
Lightly tap the gun barrel around the choke tube with a piece of wood. Use a choke tube wrench and turn it counter-clockwise to try to loosen the tube.
Immerse the part of the barrel with the choke tube in a penetrating oil. Let it sit for a day or two, then use a choke tube wrench to try to remove the tube.