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2/17/2011 4:01:15 PM EDT
How much of a backdrop is needed for this stuff?
2/18/2011 5:34:29 AM EDT
[#1]
You still need a pretty darned good and HARD backdrop.

For example....  I shot some 1/4" mild steel pistol plate with XM556NT frangible and it nearly penetrated the steel.  I'm talking a huge crater that slightly pushed through the metal, but didn't quite penetrate.

Harder steel isn't a problem... but any soft materials and the frangibles pretty much act like regular bullets.  I've shot them through 2X4s and the zing right through.

2/18/2011 6:05:31 AM EDT
[#2]
FWIW, I sent Old_Painless a box of these frangibles for one of the old original Box O' Truth posts here several years ago.  He didn't test it against steel, but it penetrated more drywall than I would have thought at the time...



http://www.theboxotruth.com/docs/bot4.htm



2/18/2011 11:17:39 AM EDT
[#3]
Thanks guys- there goes my idea of a basement range!
2/18/2011 11:59:19 AM EDT
[#4]
I've been reloading with frangible .223 and 9mm for about six months and use them on some AR500 targets.

I contacted the bullet manufacturer for ideas on how to make a range out of a storage container and he recommended sheets of the AR500 steel set vertically so that bullet impacts were 90 degrees to assure the bullets break up completely.

I have seen some places that sell the sheets in various thickness and I'm wondering how some sheets1/4" or even 1/8" would hold up.
2/18/2011 1:50:28 PM EDT
[#5]
We were issued International frangible years ago and it would penetrate both sides of a 55 gallon drum.  Left one nasty hole coming out the other side.  I know thats very soft metal, but I was shocked it would do that.  We don't use it anymore.
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