I saw something similar to that about an improvised gernade launcher.

Knowing a little about shotguns, I would suspect the problem of blowing up the gun would be remote if you:

Use a full bore barrel (no choke)

Push the broom handle snug against the wads before fireing.

Make the bearing surface even the full length of the broom handle to the barrel (Just shimming the rear and front of the broom handle could result in torqueing of the broom handle as it exists the barrel).

Remember the inertia of the broom handle launcher has to overcome the increasing resistance that the line has as the length of line increases.

Make me the beneficiary of a large life insurance policy on your life.

Bountyhunter <img src="images/graemlins/grin.gif" alt="" />