I was at the range a few minutes today. I lined up 3 one gallon jugs of water from Wal-Mart and placed in front of them a folded lightweight cotton windbreaker. The jacket was light cotton with a smooth, lightweight liner like a good suit coat. I folded it so there were four layers of shell and liner to go through. That is more like the outer clothing we see in this part of the country.
I fired a .38 Special Winchester "Defend" 130gr jhp from my Cobra at about 8 feet. I was sure the bullet would be captured inside the 3rd gallon jug. Wrong! The bullet split open the second jug and went all the way through the third jug and disappeared downrange. I was unable to find it. However, judging by the exit hole in the third jug the bullet did expand or it tumbled and exited sideways. Either one is okay with me. I am pretty impressed with this load, especially since it is standard pressure. More work to follow.