Can a Rock STOP a Bullet? (How Bulletproof) *TEST* #science #gun

Published on June 21, 2023
Duration: 1:00

This video tests the ballistic resistance of a lava rock against various firearm calibers. While smaller rounds like .410 birdshot and .22 LR only cause minor surface damage, larger calibers like .380 Auto and 9mm embed their projectiles. The .223 caliber cracks the rock, and the 7.62x39 round breaks off a significant chunk, demonstrating that even natural materials can offer some projectile resistance, though not true bulletproofing against rifle rounds.

Quick Summary

A lava rock was tested against calibers from .410 birdshot to 7.62x39. While smaller rounds caused minor damage, .223 cracked the rock and 7.62x39 broke off a large chunk, showing some ballistic resistance but not true bulletproofing.

Chapters

  1. 00:00Introduction & Caliber Lineup
  2. 00:09.410 & .22 LR Testing
  3. 00:19.380 Auto & 9mm Testing
  4. 00:38.223 & 7.62x39 Testing

Frequently Asked Questions

Can a lava rock stop bullets?

A lava rock demonstrated some resistance, but not true bulletproofing. Smaller calibers like .22 LR caused minimal damage, while 9mm and .380 Auto embedded. A .223 cracked the rock, and a 7.62x39 broke off a significant piece, showing it can resist penetration to a degree but is not a reliable bullet stop.

Which calibers were tested against the lava rock?

The test included .410 birdshot, .22 LR, .380 Auto, 9mm, .223, and 7.62x39. The results varied significantly, with smaller rounds causing superficial damage and larger rifle rounds causing structural failure of the rock.

What was the effect of the .223 caliber round on the lava rock?

The .223 caliber round, fired from an Anderson Manufacturing Dissipator rifle, caused a noticeable crack in the lava rock. However, it did not penetrate through the rock, indicating significant resistance from the material.

Did the 7.62x39 round penetrate the lava rock?

The 7.62x39 round, fired from a Riley Defense AK-47, did not fully penetrate the lava rock but broke off a substantial chunk. This indicates it was the most powerful round tested against the rock's material integrity.

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