Can Oobleck Stop a Bullet?

Published on July 31, 2025
Duration: 1:17

This video from Yee Yee Life demonstrates the bullet-stopping capabilities of Oobleck, a non-Newtonian fluid, against various calibers from .22 LR up to .50 BMG. The experiment, conducted by an experienced host, shows how Oobleck's properties change under impact, effectively stopping smaller rounds but failing against high-powered rifle cartridges. The test highlights the significant difference in terminal ballistics between handgun and rifle rounds.

Quick Summary

Oobleck, a non-Newtonian fluid, was tested for its bullet-stopping capabilities against various calibers. It successfully stopped .22 LR and .380 ACP rounds. While it contained a .223 Rem round by bursting its container, it was penetrated by .45 ACP and utterly destroyed by a .50 BMG round, demonstrating its limitations against high-powered firearms.

Chapters

  1. 00:00Introduction to Oobleck Properties
  2. 00:13.22 LR Caliber Test
  3. 00:21.380 ACP Caliber Test
  4. 00:31.45 ACP Caliber Test
  5. 00:43.223 Rem Caliber Test
  6. 00:56.50 BMG Caliber Test

Frequently Asked Questions

What is Oobleck and how does it react to bullets?

Oobleck is a non-Newtonian fluid that acts like a liquid when handled slowly but becomes solid-like under sudden impact. In this test, it successfully stopped .22 LR and .380 ACP rounds, but was penetrated by .45 ACP and higher-powered rifle rounds like .223 Rem and .50 BMG.

Which firearms were used in the Oobleck bullet test?

The video featured a Ruger 10/22 for the .22 LR test and an AR-15 for the .223 Rem test. Other handgun calibers (.380 ACP, .45 ACP) and a .50 BMG round were also tested against the Oobleck barrier.

Did Oobleck stop all the bullets fired at it?

No, Oobleck demonstrated varying levels of effectiveness. It stopped .22 LR and .380 ACP rounds. While it contained the .223 Rem round by bursting the container, it was penetrated by the .45 ACP and completely overwhelmed by the .50 BMG round.

What was the outcome of the .50 BMG test with Oobleck?

The .50 BMG round had a catastrophic effect, completely destroying the container holding the Oobleck, the wooden table it was on, and passing through the test mannequin, highlighting the immense power of this caliber.

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