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Forcing cone damage

Discussion in 'Handguns: Revolvers' started by Zendude, Dec 28, 2019.

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  1. Zendude

    Zendude Member

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    I have read about damage to forcing cones on some revolvers when high velocity 357 magnum loads were starting to be used. My question is whether the damage to the forcing cones was specifically a result of the velocity of the bullet hitting the forcing cone or the high operating pressure of the cartridge. I understand that the high pressure caused flame cutting damage to the frame above the cylinder gap.
    The reason I ask is that some current 38 special SD ammo is loaded with very lightweight bullets. An example is Liberty Civil Defense loaded with a 50 grain bullet with an advertised velocity of 1,500 FPS. Although the bullet itself is light, would that kind of velocity potentially damage a forcing cone in, say, a j frame?
     
  2. 243winxb

    243winxb Member

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    SAAMI has some standards in 38 +P with velocity at 1420 fps. If the gun is rated at +P or is a 357 magnum model, i dont see a problem, if loaded to SAAMI pressures. Note that the vented barrel velocity is lower. 1155 fps.
    It may be possible for a short bearing surface bullet, fired from a large chamber to enter the forcing cone crooked?? Lead not as much a problem as a jacketed bullet. May not be an issue at all?

    my guess. 20191228_181655.jpg
     
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  3. LaneP

    LaneP Member

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    I don't think you'll have issue with light to moderate use, which is basically what those types of "exotic" high velocity ammo is intended for. For myself, I'm not a fan of the concept behind them, I prefer to practice with and carry more traditional bullet weights and configurations for SD.
     
  4. sequins

    sequins Member

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    Anyone got a link to gel tests with that 50gn zoomer? I feel like theres no way it penetrates past 8" but I'd love to see a test.
     
  5. 243winxb

    243winxb Member

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    interestion. Put some rib bones in that Gel :D

    https://www.midwayusa.com/product/1018006583
    Nickel plating should be harder then copper or jacketed??

    At 1500 fps, bullet impact should be low. Not a problem at close rance.
     
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