Even the best steel (AR550), with rifle, is going to be 75 to 100 yards. Same steel, with pistol, can be 5 yards before there is an issue, but most use 7 yards to have a buffer.
Can you shoot steel at 10 yards with rifle? Sure, a few times. But then it starts to pock, and or crack, regardless of what you use or how you hang it.
Method of mount as well as angle is a thing. The more perpendicular to the bullet path and the more rigid the mount, the more the steel is going to be damaged and, after time, cause ricochets. That would of course be inside that 100 yards. The closer you get, the flatter the target face, the softer the steel, the harder the slug, the faster the slug...those all increase damage potential to the target. Damage the target, get ricochets and frags coming back at the shooter.
We have built boxes around steel and shot them at closer ranges, and or with impact velocities over the manufacturers specs, for specific training circumstances. We know we might damage the steel, so we check it regularly. If you want to shoot reactive targets closer, use paper or plastic, like the Newbold targets.