Shooting steel is Blast
I have five 1/2" plates that I welded chains to the back of.
Pistol rounds of all calibers seem to just splatter without leaving the smallest dent.
I can however tell you it is not a good idea to shoot steel core rifle ammunition at them.
but it can get you an expensive ride in an ambulance and a free interview with the local police.
You're not kidding.
And just for the record, I'm not the one who did the shooting (of said ammo), or the one who got the ride to the hospital - but I did have to deal with a local sheriff's dept, as well as had two of my nice plates turned into Swiss cheese