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  1. #1
    Machine Gunner SAnd's Avatar
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    Default Ever wonder why tracer bullets start fires...

    Here is a video of tracer bullets burning. You can see why they can easily start a fire.

    https://www.youtube.com/watch?v=QuRF...OnvQOwkeY39EJ7

    Bigger bullets have generate bigger flares.
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  2. #2
    Witness Protection Reject rondog's Avatar
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    I fired some tracers from my M1 into a huge dirt cliff face once, figured that was about the safest thing I could shoot them at, it was at least 600-700 yards away and all dirt. It was cool, but then I noticed the little fireballs cartwheeling down the cliff face, so I gave that up. Damn hard to find a safe place to shoot 'em.
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    High Power Shooter drift_g35's Avatar
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    My cousin who was a Ranger said he would always put 1 or 2 tracers in his magazines first so he knew when he was out or ammo. Dont know how true this is but makes sense.
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    Grand Master Know It All OneGuy67's Avatar
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    While I was in Iraq, I put a tracer every 5th round and the last 3 in a mag.

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  5. #5
    Machine Gunner Circuits's Avatar
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    Every single time I've shot tracers, they've started a small fire. I won't do it any longer unless it's raining or just stopped raining, there's snow cover on the ground, or I'm in sandy/rocky desert terrain with absolutely nothing nearby that could possibly catch fire.

    That's been my experiences here in the southwest. Tracers are almost certainly not nearly as dangerous in greener and wetter climates.
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  6. #6
    Witness Protection Reject rondog's Avatar
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  7. #7
    Varmiteer DocMedic's Avatar
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    Just like anything in the army there's FM for that . Believe the order was 2 tracers on top 3 tracers at the bottom with a 3 bullet to 1 tracer setup. The idea behind the first 2 tracers would allow you to know if you loaded a fresh mag. Of course this was before Optics and Night vision laser's where common in the Big Army. Afghanistan I had them, Iraq they wouldn't even issue them.

  8. #8
    Machine Gunner vossman's Avatar
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    So what ignites the burning tip as it leaves the barrel? The friction from acceleration? Is it ignited in the barrel from the gasses that pass the bullet? Stupid questions I know, sorry.
    Last edited by vossman; 05-29-2014 at 18:26. Reason: Cant spell good.
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  9. #9
    Machine Gunner Circuits's Avatar
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    Quote Originally Posted by vossman View Post
    So what ignites the burning tip as it leaves the barrel? The friction from acceleration? Is it ignited in the barrel from the gasses that pass the bullet? Stupid questions I know, sorry.
    The tracer bullet is long and hollow, and basically packed full of something related to the burning compound in a highway flare.

    The back is stoppered with an igniter cap, that both serves to keep the flare compound compressed inside the bullet, and which is lit by the burning powder behind it, then burns through and ignites the tracing compound somewhere downrange.

    Immediate tracer, or tracer which has lost its igniter cap simply starts burning immediately.
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  10. #10
    Machine Gunner Colorado Osprey's Avatar
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    The back of the bullet is hollow and filled with the tracer compound. When the cartridge is fired it ignites the compound from the powder burn. That is the reason for the long for weight bullets and the reason the military is using a 1:7 barrel to try and stabilize the 62 grain tracer round in the M4's. No other bullet in .224 requires a 1:7 twist. Even the 75 grain A-max can be stabilized in a 1:8.
    I say lets all remove the warning labels and let nature take its course.

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