I have to agree Bill. When I was told about cutting the shot shells in two and the whole load going out the end of the barrel I was concerned as well.
I prepared a shell and then tied my old 20 gauge to a tree while aiming it at the base of another tree about twenty feet away or so.
Then to see how much penetration it had I placed the top of a 55 gallon barrel in front of where the projectile was supposed to hit. The necessity of leaning it against the tree so it would remain in place left a gap about 3 inches from the steel drum lid to the tree.
I had a lanyard prepared and in place around the trigger when I loaded the gun. Then I went and stood behind my car and gave the lanyard a pull. BOOM!!!!
There was a neat little round hole in the steel drum lid just a tad larger than the 20 gauge shell and a hole about 1-1/2" in diameter about an inch or so deep in the solid oak tree.
I figured that would be plenty of penetration for a little Okie deer.

Only later did I find out it was illegal as hell to hunt with said bullets!!!!
So if someone just absolutely must do it be sure the gun is anchored securely, tie a lanyard to the trigger *Before* you load it and then stand behind decent cover when you pull the lanyard!!!!
That way if the gun goes *BOOM* at least you won't.:thumbup: