We do a demonstration with disposable (standard weight, not heavy duty) pie plates for our firearm safety classes. We take the kids to the pistol bay and hold the pie plate next to the side of a revolver with the flat bottom almost touching the cylinder. We use a Ruger singe six .22lr, American Western with .38 special and .357 mag, a Berretta .45lc in single action, a S&W 625 in .45acp, and S&W 500 PC.
The the most damage is actually done with the .357 and the .45 lc. The 500 was next with the 625 coming in close behind. I got the idea for this after burning a finger with the single six shooting .22 mag. I was curious as to what could happen if I could get 2nd degree burns from a .22. This is a demonstration that does get the kids attention!
These pictures show what I was lucky enough to learn and pass on with only a few days discomfort. However, I hope I pointed out that your not OK just because you don't own a .460. Also, I never had a problem with this until I started really shooting a lot of USPSA with my 1911 and 2011. Now I have to remember where my finger goes when I pick up the revolvers.
I'd post pictures, but I don't keep the plates after the demonstration, and at five below last I checked I'm not real excited about going outside right now (wifey is ok with my guns and shooting

, but nothing but air in the house

)