If I had a chunk of this-

[edler7]

I could shoot in my basement. Amazing stuff !

[twc1964]

Thats so freaking cool. Heck if you had a good supressor, you could shoot about anywhere. I bet it costs a pretty penny though.

[HarryT]

Just one word....ceramics! "The Graduate (kind of)"

[edler7]

I just thought I was impressed with the 5.56 and 7.62, but when they pulled out the M2 I sat up and took notice.

[shooterg]

Oughta be able to recover all the bullets to make more !

[Dale in Louisiana]

You gotta love it - somebody needed a honkin' big MG, and they haul out John Browning's M-2, a hundred years old and still kicking butt in a major way.

I remember when I transitioned to the M60-series tanks and found that the .50 caliber was the M-85, a neat design, rapid barrel change, short receiver, so it didn't take much space up in the cupola in which it was mounted. It was reliable enough. but it was no M-2.

dale in Louisiana

[edler7]

It was reliable enough. but it was no M-2.

Some things never go out of style.

[JSnover]

I wish I knew what the material was. A long time ago I imagined a hollow structure like that: a wall filled with some granular material that would trickle down to fill the voids in order to withstand repeated hits. Another missed opportunity...

[jonas302]

You can shoot in your basement now there is a big berm behind the wall(;

[BNE]

I wish I knew what the material was. A long time ago I imagined a hollow structure like that: a wall filled with some granular material that would trickle down to fill the voids in order to withstand repeated hits. Another missed opportunity...

Most likely a 95+% alumina balls. These are commonly made and used in the higher tech ceramic companies. This is the same material used for spark plugs. The balls are used to grind or mill the powder In prepping it to process.

[edler7]

You can shoot in your basement now there is a big berm behind the wall(;

That's true. I got the feeling there would be negative consequences to accessing it, though.

[HarryT]

http://www.thinkdefence.co.uk/2015/0...a-soft-armour/
"...Barracuda Modular Soft Armour System employs a matrix of ceramic balls..."

[Blacksmith]

Here are some ceramic balls, either Alumina or Silicon Nitride, in case you want to try it:
http://www.mcmaster.com/#ceramic-balls/=w7q2uv

Oops looks like only governments can afford them in quantity.

[wallenba]

New building codes for east L.A.? Drive-by shooting? No problemo jeffe.

[StratsMan]

I was at a range a few years ago that had built 3-sided 'hut' for people to clear their guns, if necessary.... The walls of the hut were 2x4 frames but we're filled with smooth river rock, maybe half-inch diameter.... They said they tested it with 30-06 and it did not penetrate.... Looked like the OP video done the cheap....