Probably not a good idea to shoot at steel plates...
I've got a couple of steel silhouette targets of bighorn sheep left by the previous landowner. They are warped into curves by all the bullets they have taken over the years. Most of the high power rounds just make craters in the 1/2" plate. A few penetrate.
And, once in a while, they ricochet. Last summer, one of my friends shot his .308 at the backstop and caught one of those silhouettes just right. The round came back over our heads, and ended up in the hillside behind us. Good thing my range is down in a hollow!
The whine of that round passing was enough for me - the sheep got retired behind the backstop!
Videos found in the comments at Failure to Fire.