FYI,
I just thought I'd share this little tidbit.
A friend of mine was duck hunting this weekend and managed to blow the end of the barrel off of his Browning BPS.

The culprit appears to be Steel shot that was stuck together from moisture.

Guess we really need to think twice before launching a load of these down barrels that can't be replaced.
In case you can't tell, I just love these little smilies!!!