The following two photos are of my target stand. It has evolved over a couple of years.
The first shows what it looks like when I shoot from 25 metres away, the second has the target box opened to show how the metal strips are arranged inside and how the target (which is a standard piece of copy paper with red stationery store dots on it) is trapped under the front when it is lowered. There are two small spikes at the top, and the frame has two screws sticking through on the bottom to trap it in place.
The hole in the bottom of the box was to set it on a steel fence post, but now it has a sliding cover (a tin can top) and catches some pellets. The rest wait for me to open the front, and I then dump them into a tin can seen below.
The frame cover of the target box is 1/8" x 2" steel strapping and the back inside is clad in the same thing. The pieces in the back are hung loosely from ordinary decking screws with a chunk of old denim jacket behind them to help absorb the shock. A coat hanger wire holds them back, and a couple of screws keep them edge to edge.
I get tiny shrapnel holes in the targets sometimes, but never anything of any size.
The target box just hangs on a shelf. At the back of the shelf is a piece of heavy angle iron with a groove in the bottom. I used to set the bright red pull tabs from my favourite beverage in the slot, but they don't have them any more.
Also on the shelf is a standard pop-up/resetting target.
Stuck into the shelf are coat-hanger wires with lead discs on the top. The discs are great fun to shoot. Sometimes they spin around and so sometimes one has to shoot at the edge. When they are hit solidly, they bob and weave all over the place. Also when hit, they sometimes make a tiny "click" noise, or no noise audible to me at all. Then I just smile and watch them bounce around.
If I miss about 3 times in a row, I go back down to the target to see where I'm shooting.
I have my very own mini-muffin pan and my own 9" cake pan. I use a hot pot and melt used pellets. About 1/4" in the bottom of a mini-muffin mold makes about a 1-1/4" disc. It gets a hole drilled in it (lead really really really wants to grab the drill bit), painted black and impaled. (some discs in the picture are older and a little bigger than I make them now)
The cake pan makes the back-stops which are also made of used pellets. I got the idea for re-cycling the lead from someone else, probably here and it works great.
The pellets stick, and eventually I cut up and re-cycle the back-stops and discs.
Peter