It’s been over a month I’ve been shooting at short ranges (30-45m), and was using a Cardboard box 18"X18”X10” filled with old notepads.
Layers of papers seemed to be good at killing pellets speed and none escaped from the other end.
However there are two cons with this setup which got me put this post here:
1) G-Smith or other 10.6+Gr pellets mostly are reaching the last layers of the notepads in box; May escape into the open barren field behind, and a flyer can be even dangerous...(not using back-stop).
2) 8+Gr pellets are cutting the papers inside into Tiny bits like that you get from Paper-Punch machine, or those from shredder, spreading around even after I’ve shaken them out before bringing back the box in my home {This one's not a big deal until my Wifey discovers where from that mess is coming in

So wanted to know from You all, specially from Members plinking indoors, and those who may not have proper back-stop/pellet catcher arrangements.
What as Targets do You use?
Or maybe, a Target + Pellet catcher + backstop (e.g. Concrete Wall), or similar combination?
The Air-rifle is NX200 Athena, .177, NP Power plant.