Guns locked in hot cars

This is a discussion on Guns locked in hot cars within the General Firearm Discussion forums, part of the Related Topics category; I wonder if there is any chance of a gun locked in a car for several hours on these 90 to 100 plus degree days ...

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Thread: Guns locked in hot cars

  1. #1
    Member Array DonnieD's Avatar
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    Guns locked in hot cars

    I wonder if there is any chance of a gun locked in a car for several hours on these 90 to 100 plus degree days going off from the heat.

    Donnie D

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  3. #2
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    No, not really in my opinion/experience.

    It gets hotter in the Middle East than most of the areas around here. And we kept our ammo over there in metal crates and ammo cans, and I never saw a round cook off.
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    VIP Member Array BugDude's Avatar
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    I keep mine in my truck in the Florida summer heat and never had one go off.
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    VIP Member Array Brad426's Avatar
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    No chance.
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    Distinguished Member Array mr.stuart's Avatar
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    Not in my opinion. My old man left guns in cars and trucks in S.E.Texas heat for years.I do mean they never left the vehicles for years on end.They never exploded. They all shot fine.
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    If you car is on fire then your ammo will cook off, if just sitting in the hot sun, nope.
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    I agree - no chance.
    BUT, don't leave polymer exposed to extended high heat and Sunlight. Intense heat in combination with strong Ultraviolet light is not great for most polymer plastics.

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    I don't have a link, but I seem to remember a while back, someone tested this by putting cartridges into an old oven and firing it up.

    As I recall, it took a few hundred degrees to start cooking off.

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    Nothing to worry about with the ammo.....now your skin if you forget and slip the gun IWB after baking in your car for several hours is a different story.
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    Not a chance. Maybe in hell :-)
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  12. #11
    Member Array pfries's Avatar
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    The Auto ignition temp of smokeless powder is too high for that to be a concern.

    Example Winchester ball smokeless powder auto ignition temp. Is 190 to 200 degrees Celsius or 374 to 392 degrees Fahrenheit.

    Attached is a link to the MSDS for the powder used in this example.

    http://www.winchester.com/SiteCollec...s/msds_w64.pdf
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    Distinguished Member Array RevolvingMag's Avatar
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    I really don't think it would 'go off'. But DEFINITELY don't just grab it when you get back; kick the A/C up, and let it cool down. Otherwise you might get a really nasty surprise- especially if it's a steel gun... (Think about a cast iron skillet )
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    Senior Member Array Fausty's Avatar
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    no. we have covered this before. 100% general consensus.
    My metal band: Born under Sirius

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    A glock can melt, though. So get a stainless steel Smith and Wesson revolver.

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    Senior Member Array Fausty's Avatar
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    move to alaska obv.
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