I was at a surplus store sometime ago and picked up cheap a used CCTV camera for parts. It had an aluminum cover to protect the camera.

So I took it out to the range and plinked at it with a .22

What I found was anything less than a wildcat .22 would bounce off the cover,leaving just a dent. The hottest of the wildcats (>1600 fps) slid through the camera like butter.

Just sayin.