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how to stop a bullet

the poopie show | May 3, 2026



the materials and physics behind stopping a bullet. not tried but tested methods.

Written by the poopie show

Comments

This post currently has 27 comments.

  1. @steel8231

    May 3, 2026 at 11:54 pm

    "Stopping Power" isn't a real measurement, if anything it's slang for how well people perceive the round's ability to dump energy into a target on impact. Wide rounds like the 45 acp dump almost all of their energy almost immediately, small rounds like the 5.56 out of an AR15 keep their energy for longer so they can punch through more material. 9mm is between them but obviously there's a bunch of complicated physics I'm skipping because this post would take longer to read than the video is long.

  2. @jhstylewon1172

    May 3, 2026 at 11:54 pm

    1:47 I'm not quite sure where you got the data for how much books you need to stop a bullet, but I don't think this is correct to generalize for any bullet. Even two stacks of printer paper is sufficient to block against almost all handgun bullets. That's like, any two paperbacks from the Twilight series. Or two bibles.

    For rifle calibers, a single stack may not be sufficient. However, A very easy way to block it is by taping any cheap ceramic floor tile (at least 1/4 inch or 6mm thick) on that stack of printer paper. This can sufficiently block the majority of common assault rifle calibers like AR-15 (.556 NATO) and AK-47 (.762×39) at least once. So, a Twilight paperback, a bathroom floor tile, and a few pieces of duct tape. That's enough.

    If we're talking bullets from the black powder era (most of pre WW1), even less is needed to successfully stop common bullets. This is where most stories of a person being saved by a pocket bible, a lucky coin, a lighter, and other common household items exist.

    If we get into extreme calibers like 50 BMG, you'd be correct that absurd amounts of books or poor tablets would be needed, but these calibers are almost non-existent outside of heavy immobile machine guns or rare sniper rifles common only in the military (or Texas). But I thought we're talking about bullets in general, not these outlier cases?

    Big fan, btw. I love your usual videos and I hope this was a respectful critique.

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