John,Found this on utube yrs. ago. Stand a truck or tractor tire on end, wrap two chains around top to hold your steel target inside of tire (would be great if you could drill holes to hang chain through). When lead hits target it will collect inside the tire. Works pretty good.
When you want to use a post quote, click quote then reply and all will be on the same reply, trying to help not be an a$$.
Anyway steel has a bad habit of throwing ricochets in directions that don't make sense when hit on the edge, it does not matter if the plate is on a chain or an angle, also lead spatter comes off the steel in a 360 deg circle 90 deg to the face of the steel plate and again this does not change with chain or angle.