Thanks to John C. for sending us this our way via Facebook.

This was from a Sig MPX that I had been shooting suppressed. I had been using white lithium grease in the can and the back pressure had forced that back into the barrel. After removing the suppressor and firing a shot from about 4 inches away it printed this. Lets be honest it was a ‘line of sight line of bore’ error. One can actually count the 6 groves as the grease spun off the bullet at 100,000 rpm. Thought this may make a good post. You are welcome to use it.


  • BattleshipGrey

    That’s pretty cool. I knew running cans were dirty, but that’s kind of crazy.

  • Rick Fernandez

    I must say, that’s pretty cool.

  • Pete M

    Lucky ladybug.

  • Austin

    Looks like suppressor art is in his future

  • JumpIf NotZero

    Look who doesn’t remember their offsets… But cool photo.

  • SP mclaughlin

    No Mr. Bond, I expect you to die.

  • Vhyrus

    Being not at all a suppressor guy, can someone explain the significance of this picture?

    • Nicholas C

      Not much. It is a happy accident.

  • Zach Robinson

    Great photo but I’m not entirely certain it can be attributed to lubricant. I’ve had this happen multiple times while running Collateral drills in classes with multiple students experiencing similar patterns on their targets. I’ve experienced it personally with an M&P9, unfortunately the brand of ammo escapes me. As far as lubricant was concerned I was at the time primarily using Seal 1 or some derivative of it, my gun was unsuppressed, and hadn’t been lubricated in a considerable amount of time.

  • mazkact

    I’ve similar but not as dramatic affects using moly coated bullets.

  • uisconfruzed

    IF that’s due to grease getting pushed back into the bore.
    I suggest you stop that practice immediately.

  • Patch Ate

    These spirals are in the shape of what’s known as the “Fibonacci Spiral” or the golden spiral. Another example of the golden spiral in nature.