I decided to rebuild my shot box.
With one that could easily be rotated and a $2.50 replaceable lid
With one that could easily be rotated and a $2.50 replaceable lid

After the hole gets big enough I may just do that!Should carve out most of the lid to where it can receive cardboard cut outs, would be very easy to tape up the holes in cardboard a couple times before replacing, at least with how much shooting over my chronograph I do.
A little bit of gasoline and a match should help separate the cardboard from the lead.How do you separate the materials? Mine has a lot of cardboard. I didnt like the dust and ran away.
Mulch is the quietest projectile stopper. I put thousands of rounds into the last box, and depending on the depth you can stop some serious power (I’ve stopped at least 80fpe at point blank range).I've never used mulch. I just stuff old bed sheets and towels into mine.
I’ve only ever used Duck tape to cover my holes, there was no dust to speak of.How do you separate the materials? Mine has a lot of cardboard. I didnt like the dust and ran away.
My last shot box (Rubbermaid box) I simply shot into a small area through the plastic. When the hole got too big (meaning mulch would pop out) I simply put a piece of Duck tape over it, then shot through the Duck tape.Not being familiar with the design, do you cut out most of the lid and replace it with a piece of cardboard or two so as to keep the mulch in place ?
Lets see a picture!My pellet trap is similar except the box is an old breaker box. I found the box in my shed, left here by a previous owner. So the price was right. It is made of steel that appears to be about 16 gauge. I can only pack about 3 inches of rubber mulch in it and a few shots have dented the back up high where the mulch was thinner after settling. But nothing approaching a hole. My highest fpe airgun is a little over 40 fpe. I melted down over 10 lbs of pellets out of it so far. Still in good shape.
I screwed pieces of 3/4 hardwood to the sides and bottom on the inside. Those have to be replaced periodically. A piece of cardboard holds the mulch in and is secured by pieces of little steel tubing I had on hand that is screwed to the wood inside the box. The same tubing traps the target on one side and the bottom. The top of the box has a lip for the lid which I slide the target into. So it is secured on 3 sides.
I have a 4x4 post with an old brake rotor on the bottom that holds the pellet trap up taller than the height of my dog when I am shooting into it. I have paving pieces at 10, 15, 20, 25, and 30 yards and a permanent brick column at almost 35 yards. At less than 35 yards I set the pellet trap on the 4x4 that is at the selected distance from my bench. If I want to practice off hand or from sticks I do it from the back porch and then my maximum distance is 25 yards.
I separate the mulch from the pellets when the trap gets really heavy. I dump it out on my back porch and use a leaf blower to blow the mulch away from the pellets. Not a perfect process and some finesse is required, the blower will push pellets too, but it works for me. I put some blue jean material in the trap at one point over the mulch and the worst debris I have in there is from that experiment. But the cardboard also contributes debris but I just sweep up as much mulch and debris as possible and put it back into the trap.
It's a good setup for me.