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steel

 
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  #8  
Old 03-28-2003, 11:06 PM
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Location: Central Minnesota
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Re: steel

Problem is I don't know what the hardness of the steel is. I just welded together what I could find in the metals shop.
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  #9  
Old 03-28-2003, 11:25 PM
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Re: steel

If it was just some scrap laying around in the shop, it was mild steel. SAE 36, its propper designation. It's nothing but scrap iron. Very soft.
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  #10  
Old 03-29-2003, 12:33 AM
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Re: steel

For mild steel it seems very tough to me. We use it to build the base for tool grinders. I know that my friend and I were shooting a steel pipe coming out of the ground which was holding up a log downrange. It was a about 1/4 in both sides and with a .300 Winchester and a 150 grain hunting bullet it went through it like paper. Then again I don't know the strength of that pipe. I wold think that it will go through. A couple of people want to see it in a week and a half. I spray painted it bright red then used layout die to make a target on it. Looks pretty cool.

[ 03-29-2003: Message edited by: Nighthawk ]
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  #11  
Old 03-29-2003, 02:52 AM
 
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Re: steel

Do not shoot mild steel at 100 yds. Not only will chunks of bullet richochet, but chunks of steel will leave the surface of the target and occasionly travel back at the shooter at dangerous velocity. I have seen more than one Navy Seal pull steel splatter out of bleeding flesh on their legs and arms after engaging targets with steel in the background area from 30 to 100 meters.

Only shoot A-500 or better steel at close range.
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  #12  
Old 03-29-2003, 09:51 AM
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Re: steel

I used to have an old plow bottom that I hung out at 150 yards just to hear the "ping."

It worked great, nothing I ever shot it with would make more than just the slightest dimple in it.

Then I shot it one day with some little 25 grain Hornady bullets from a 17 Remington. Durn things made pretty little holes all through the steel.
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  #13  
Old 03-29-2003, 09:57 AM
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Re: steel

Tim

It's the velocity that the culprit. I've shot a lot of AR 500 with rifles but when the impact velocity gets a bit over 3100 fps or so holes appear.

Hardened steel make a much nicer sound than mild steel (except when those little holes appear).
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  #14  
Old 03-29-2003, 05:19 PM
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Re: steel

Tim,

How thick was that cutting edge? daaaamn!

Dave I think said a bunch, I've noticed the dimples protrusion on the steel noticably different with only slight changes of MV in the same load. It would be an interesting test to compare the same bullet at stepped up velocity increments to see where the dimple just starts to appear and then finally completely exits.

Doing this with several commonly used bullets around here on different levels of steel hardness would be a valuble reference. All you'd need to know then was the bullet, steel hardness and impact velocity to decide what range you needed to be at to keep from destroying the plate.

T-1 steel, I think someone said it was 300 brinell, the 165gn Sierra GK's I shot at it were at about 2600 fps and they made the slightest dimple at 100 yds, almost not noticable. My dads 300wsm with a 180 something put a hole right through it though. Interesting...
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