I found myself wondering just how well-armed I would be encountering a good-sized Western diamondback with nothing but the Webley CO2 pellet revolver. I got a few answers. With a fresh CO2 powerlet, both the wadcutter and the domed hollowpoints easily passed through six layers of common cardboard.
They also passed with ease through a piece of Georgia Pacific wall paneling approximately 3/16s inch thick:
They also passed with ease through a piece of Georgia Pacific wall paneling approximately 3/16s inch thick: