Well I just finished watching an episode of personal defense tv. They took several calibers including 380, 38, 9mm, and the 45. These all shot through the fridge. Their conclusion, the fridge is not a good cover. I disagree, I think this would be Ok for certain calibers. But since the bad guy won't tell you what he is shooting this may be all pointless. My only criticism is the fact that they shot the fridge front to back. It is highly unlikely that you would pull a frig from the wall and stand behind it. It is more likely that you would hide behind it from the side if the fridge. There is more metal for the bullet to travel through from side to side of a fridge, than front to back. First lets assume that none of the bullets are fmj as I am sure that this will pass through the fridge, and lets assume most people will not use these as a carry round. This is what I know. Coincidently I just used a fridge as a background for my target this summer. I was standing 15 yards away. I used 357 s&W 586 with a 8 3/8" barrel. I shot 38 caliber all lead swc( police round ). This penetrated the first side wall of the fridge and dented the second side, but did not go through. Than I shot 357 magnum buffalo bore round ( wow that is fun!! ). Of Course it sliced through both sides it like butter. Then I used my S&W 38 snubnose loaded with +p federal jacketed hollow points . I stood 15 feet away from the fridge and this only penetrated through the first side of the fridge. I would have shot it with my 45 if I had it that day but sadly I did not. As I do not own a 9mm, I do not know how this would perform. But considering the dent on the second side of the fridge, I am going to assume it will pass through both sides. I would highly doubt the 380 would pass through both sides unless it is a really hot load. I guess what I am trying to say is that a fridge, especially loaded with food should not be discounted as cover as PD TV conveys. Most definitely better than an upholstered chair or a drywall.