steel

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Nighthawk, Mar 28, 2003.

  1. Nighthawk

    Nighthawk Well-Known Member

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    Does anyone think that a .30 cal going 2900 will go through a 1/2 steel plate at 100 yards? Everyone else so far has told me no.
    Thanks
     
  2. Mysticplayer

    Mysticplayer Writers Guild

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    Depends on the bullet and the steel. I almost punched through a fat 1/2" mild steel plate with my 30 Gibbs. This launches a 165gr SST at 2950fps. My shot was at 200yds.

    If you use something like a Barnes X, I think that penetration should occur. Maybe even the SST considering the bulge and stretching the shot above caused.

    Only one way to find out...

    Jerry
     

  3. Brent

    Brent Well-Known Member

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    Mild steel... YES. A 308 150gn match will.

    500 brinell steel I think will take it, unless you're talking about Barnes solids.

    A 338 300gr SMK at 3000 fps will burn holes right through at over 500 yards and dent em good at 1000yds in 1/2" mild steel... food for thought.
     
  4. Nighthawk

    Nighthawk Well-Known Member

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    Thanks guys, the bullet is a 220 gr MK from a .300 Wby. I will only shoot it at 100 yards. Oneone today said his cousin shot at one and the bullet came back and killed him. Then again he was shooting at rocks too. [​IMG]
     
  5. Guest

    Guest Guest

    I shot a 300 WinMag with factory 180gr CoreLokt bullets thru 3/4" mild steel plate at 100yds. I've also shot my 300 RUM with 190gr SMK's going 3200fps at 3/8" 500 brinell hardened steel plate at 300yds and but a tiny and I mean tiny dimple was all that happened.
     
  6. smoak

    smoak Active Member

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    I guess It all depends on the grade of steel you are shooting. I shot 180gr partition from 300 ultra and it went right through 1/2" at 200 yards.
     
  7. djdcsi

    djdcsi Well-Known Member

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    Depends entirely on the steel. US military uses 3/8" 40 Rockwell C for pop-ups, using 5.56mm.

    Hunting bullets will penetrate mild steel at given velocity/momentum,etc. 40 RC is different.
     
  8. Nighthawk

    Nighthawk Well-Known Member

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    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.
     
  9. steve smith

    steve smith Well-Known Member

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    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.
     
  10. Nighthawk

    Nighthawk Well-Known Member

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    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 ]
     
  11. Guest

    Guest Guest

    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.
     
  12. Tim Behle

    Tim Behle Well-Known Member

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    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.
     
  13. Dave King

    Dave King Well-Known Member

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    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).
     
  14. Brent

    Brent Well-Known Member

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    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...