Try shooting a little steel and you'll find out it's real enough.
Yes, rounds ricochet. They ricochet especially well off of hard surfaces like steel and sometimes they'll ricochet right back at you.
That's just another reason to wear safety glasses.
I agree that yes the will ricochet and that safety glasses are a must, but safety glasses aren't going to do anything to a 50bmg. How about DONT SHOOT INTO STEEL AT 100 YDS, especially with the biggest round available. He's lucky..very lucky. If you want to shoot into metal shoot AR-500 and at least at 200 yds.