Years ago, I worked at a welding shop and did a lot of structural steel. I would use the drops from the I-beams (some heavy for rifles, some lighter for handguns). I would cut some angle iron about 18-24" and use them for the base. I would just stand the angle iron up and angle it forward a few inches at the top, just so the back of it is just at the top of the angle iron base. That would push the bullets downward when they hit.
I would not recommend shooting at these targets any closer than 50 yards because, just like any steel target, handgun or weak rifle rounds, will ricochet.
I would not recommend shooting at these targets any closer than 50 yards because, just like any steel target, handgun or weak rifle rounds, will ricochet.