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Posted: 9/18/2009 7:47:58 PM EDT
[#1]
What kind of sand are we talking about?
Around here it's real fine and packs easily. Some places it's not really sand but rather pebbles about 3 mm in size. |
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Posted: 9/18/2009 7:51:32 PM EDT
[#2]
check out the boxotruth.com, he did some tests with sand bags on there
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Posted: 9/18/2009 8:03:42 PM EDT
[#3]
a lot
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Posted: 9/18/2009 8:06:21 PM EDT
[#4]
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Posted: 9/18/2009 8:06:45 PM EDT
[#5]
Quoted:
check out the boxotruth.com, he did some tests with sand bags on there sure about the name????? didnt come up with anything relevant..... 
Nevermind......link was perfect..... Looks like six inches of sand will stop most anything short of..... ? |
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Posted: 9/18/2009 8:13:35 PM EDT
[#6]
The following common barriers in built-up areas stop a 5.56-mm round fired at less than 50 meters:
* One thickness of sandbags. * A 2-inch concrete wall (unreinforced). * A 55-gallon drum filled with water or sand. * A small ammunition can filled with sand. * A cinder block filled with sand (block will probably shatter). * A plate glass windowpane at a 45-degree angle (glass fragments will be thrown behind the glass). * A brick veneer. * A car body (an M16A1/M16A2 rifle penetrates but normally will not exit). Fromhttp://www.globalsecurity.org/military/systems/ground/m16.htm |
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Posted: 9/18/2009 8:42:10 PM EDT
[#7]
If you're working on barriers, gravel is a lot more effective than sand. A few inches of limestone gravel will stop rifle caliber ammo.
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Posted: 9/18/2009 8:43:21 PM EDT
[#8]
About an inch, packed down the barrel.
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Posted: 9/18/2009 8:52:34 PM EDT
[#9]
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