@bander124 That sounds like it can handle a shell from an A-1 Abrams!
@bigragu thanks for the props, glad the idea could help out or spark a different idea for at least a couple people, even if there are tons of these videos on YT. That sounds like a fun project, can’t wait to see it in practice.
I did a little experimenting with Duct Seal yesterday. I don’t think it meet my needs/wants. I shot it with the .22 Cricket at 20 yards and had some pass throughs. It’s also too loud for me. I ended up folding some Rubber Mulch into it and it held up better. Still not my cup of tea. The lead just clumps and the whole thing will need replacing sooner or later. The Rubber Mulch straight up is quiet, holds up well, can be left out in weather, it’s easy to recover the lead out of it, etc.