If you hang steel plates from chains and do "controlled pairs" in your shooting, you might find that your second shot impacts the steel while it is swinging and presents such an angle that the bullet fragments are directed largely back at the shooter.
You might be better served to mount the steel plates in a fixed angle which directs the bullet fragment in a downward direction where they will hit the ground and not the base of the stand.
This is a steel target that I found for sale online. Note the angle.
NRA Life Member - Orange Gunsite Member - NRA Certified Pistol Instructor
"When plunder becomes a way of life for a group of men living together in society,
they create for themselves in the course of time a legal system that authorizes it and a moral code that justifies it." Frederic Bastiat