How did you make your Target backstop ?

8x11” box made from 2x6 doug fir, backed with 1/4 inch steel plate, 4 - 5lb blocks of duct seal in the bos on top of the 1/4 inch plate. 
Behind that, a 4x4’ backstop made from 3 layers of 2x6’s running opposite directions screwed together.
I use paper towels or but wipe for the target paper to keep the noise down along with a 4’ sound box.

Roachcreek
 
When I got back into air guns about 7 years ago I bought a Do All Outdoors rimfire bullet trap. I quickly became tired and annoyed with the noise in my backyard setting. I tried various methods to make it quieter but it was never quite satisfactory for me. Air guns had changed and advanced so much in my absence that I found myself researching them heavily online and on YouTube. I eventually learned about rubber mulch pellet traps and got an idea to stuff my rimfire trap with rubber mulch. Couple of layers of cardboard taped over the front keeps it all inside. Works great and so much quieter than anything else I tried before. My most powerful air rifle is a .25 Mrod at 40 fpe so no problem. No worries about a pass through even if it started to channel. I suppose you could use duct seal but I didn’t like that idea because I thought I’d be a lot more messy than the mulch. 
The pellet striking the cardboard is still kind of loud especially with a .25 cal pellet and when the cardboard is fresh but it gets quieter as you shoot out the cardboard and you got nothing but layers of tape your shooting through. I’ve taken the time to cut out the center of the cardboard and just tape it up before shooting to speed up the process to where it’s as quiet as it can be from the start. I don’t know that I’d recommend buying a rimfire bullet trap just to make it a rubber mulch trap out of it but if you already have one and want to make it quieter a bag of rubber mulch is fairly inexpensive. I use blue painters tape because it doesn’t leave behind sticky adhesive residue like duct tape does. 

1A4924DB-2620-45F2-9F54-A06C3B6217D6.1626588636.jpeg


That's a good idea. I had the duct seal in mine but ended up taking it out.
 
I used 2x3's to make a frame to hold a 24 x 36 x 0.5 Marine Poly board at a 45 angle...

By Marine poly board do you mean HDPE? Like King Starboard?

I actually have to order some of that for other projects. 

I have some ideas for a pellet trap. I'll have to order extra.

Yes, King Starboard is just a popular brand name. Here is mine after about 5 tins at just under 50 ft/lbs. It is also a lot quieter. Sounds like hitting a sheet of plywood with a picking hammer instead of the oblivious ding from anything harder like metal. That included with all my mouse fart pcp's the dogs do not even open their eyes.

You can see the floormats are shredded. But they do stop any double ricochets from hitting the targets with bb's. I used 3M premium contact cement and let it dry for 2 days in the sun, It was peeled off within 3 days just from the weight of the pellet's trapped in it. There are 2 floor mats in the pic. What is left of the glued mat and another one on the right was a very tight weave 1 inch thick out door floor mat doubled over a 1x2 from the top support, now it's just a shredded string tunnel I can stick my hand through. I shoot a lot of bb's and they love to ricochet, so I want the floor mats. Especially with a fish tank about 15 yards away, but I have no worries.


backboard-5-tins.1626719427.jpg

 
deliriousintenti, How do you like the BOG? I found it a bit heavy to fold up and carrie around.

I only use it for charging at home or if I am setting up for a long bench session. It takes up a lot of space and it's very top heavy if not level.
I do not use it for shooting, I only use it as a rest, so I keep the knobs tight.

charging-pcp-bench.1626720224.jpg

 
My kids bought me a plastic trap with a metal back, I think Crosman makes it. My Prod tore it up partially because I was shooting down at it and hit the plastic bottom, not the metal back, sometimes. So I saved the metal back and made a similar box of scrap 3/4 plywood. I filled it with rubber mulch and staple a carboard front on it. Targets get attached with paper clips to the cardboard. My ~50fpe Avenger is tearing it up a bit when I hit the plywood sides. But so far it works. I'll probably eventually make a steel box of about 1/8 inch thick plate so I don't have to keep remaking it. Or I may just build several wooden pellet traps as they get shot up. I guess it depends on how long the plywood ones last and if I find a cheap source of some plate.

I put screw in hooks on the back of the trap so I can hang it on my chain link fence. Keeps it above my doggies height.
 
Plywood box lined with Duct Seal inside back. Box is stuffed with rolled up carpet scraps. I shoot all FAC and nothing makes it through the carpet. Carpet is a tough fiber and tight heavy weave. Scraps are easy to come by. Just about all the pellets are stuck in the carpet and easy to remove then replace with more carpet. Even my 25 cal at 900fps doesn’t make it through. Two clip board clamps to hold the 67lb paper I use for targets. 



I sure like some of the shooting gallery types shown. Wish I had the land. My wife thinks the lawn is sacred land. I can drag out whatever I please but I have to drag it back at the end of the shooting. No male lawn ornaments.


DSC04115.1626827876.JPG