RN 50 Blow Up...CONCLUSION!

Published on September 13, 2022
Duration: 14:52

This video concludes the RN-50 blow-up analysis, identifying the primary cause as the use of fast-burning pistol powder instead of slow-burning .50 BMG powder. Mark Serbu demonstrates how this error can create pressures exceeding 400,000 PSI, far beyond the rifle's design limits. The analysis includes comparisons with standard .50 BMG loads and even high explosives, using simulations and analogies to explain the catastrophic failure.

Quick Summary

The RN-50 rifle failed due to using fast-burning pistol powder instead of slow-burning .50 BMG powder. This mistake created extreme pressures over 400,000 PSI, far exceeding the rifle's design limits and causing catastrophic failure.

Chapters

  1. 00:00RN-50 Blow-Up Cause: Pistol Powder
  2. 00:38Failsafe vs. Fail-Proof & Idiot Theory
  3. 01:54Normal .50 BMG Pressure Analysis (QuickLOAD)
  4. 03:09SLAP Round Pressure Analysis
  5. 04:30Fast Powder Pressure Spikes Explained
  6. 06:44Energy Density and Burn Rate Comparison
  7. 08:06Watermelon Analogy for Pressure
  8. 10:34Gunpowder vs. High Explosives Pressure
  9. 13:17Final Assessment & Safety Features

Frequently Asked Questions

What caused the RN-50 rifle to blow up?

The primary cause of the RN-50 blow-up was the use of fast-burning pistol powder loaded into a .50 BMG rifle case. This incorrect powder choice created pressures far exceeding the firearm's design limits, leading to catastrophic failure.

What is the difference between pistol powder and rifle powder?

Pistol powders are designed to burn quickly, releasing energy rapidly for short-barreled handguns. Rifle powders burn much slower, releasing energy over a longer duration suitable for longer rifle barrels and higher pressures, preventing dangerous pressure spikes.

How much pressure can fast pistol powder generate in a .50 BMG rifle?

Simulations show that using fast powders like Alliant Bullseye can generate peak pressures exceeding 400,000 PSI in as little as 0.04 milliseconds within a .50 BMG case, which is extremely dangerous.

What is the normal pressure for a .50 BMG round?

A standard .50 BMG load using appropriate slow-burning rifle powder, like Hodgdon 50BMG, typically peaks around 55,000 PSI. This pressure builds gradually over approximately 0.6 milliseconds.

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