CCI CB long, went through paper target, cardboard backer, missed top of dirt pile then went through cedar clapbaord, 5/8" plywood, 8 storm windows leaning against wall in the garage, through rubermaid barrel (empty) then made dent in my pickup door.
I would not stand in front of one.
PS this made me buy a bullet trap rated for 9mm with an 18" square opening.