This Sniper Rifle Can Fire the Wrong Ammo!!!

Published on October 10, 2024
Duration: 1:00

This video tests the PSA Sabre 10 rifle's ability to fire incorrect ammunition, specifically 7.62x39mm in a .308 Winchester chamber. While the rifle successfully fired the round without catastrophic failure, the spent casing underwent significant 'fire-forming' to adapt to the larger chamber. The action did not cycle, highlighting a potential safety and reliability issue when mixing ammunition types.

Quick Summary

Firing 7.62x39mm in a .308 rifle like the PSA Sabre 10 causes the brass casing to 'fire-form,' expanding to fill the larger chamber. While the rifle may not explode, the action will likely not cycle, leading to malfunctions and potentially unsafe conditions.

Chapters

  1. 00:00Intro: PSA Sabre 10 & Standard Ammo
  2. 00:12The Experiment: Firing 7.62x39mm in .308
  3. 00:34Live Fire: The .308 Rifle Shoots 7.62x39mm
  4. 00:45Brass Analysis: Fire-Formed Casing

Frequently Asked Questions

Can a .308 rifle fire 7.62x39mm ammunition?

While a .308 Winchester rifle like the PSA Sabre 10 can physically chamber and fire a 7.62x39mm round due to similar bullet diameters, it's highly unsafe and not recommended. The casing will expand significantly ('fire-form') to fill the larger chamber, and the rifle's action will likely not cycle correctly, leading to malfunctions.

What happens when you fire 7.62x39mm in a .308 rifle?

When a 7.62x39mm round is fired in a .308 Winchester chamber, the brass casing expands dramatically to conform to the larger chamber dimensions. This process is called 'fire-forming.' The resulting casing is distorted, often straight-walled, and the rifle's action typically fails to cycle, requiring manual clearing.

Is it safe to shoot the wrong caliber ammunition?

No, it is never safe to shoot the wrong caliber ammunition. While some combinations might not cause immediate catastrophic failure (like firing 7.62x39mm in a .308), they can lead to severe malfunctions, damage the firearm, and pose a significant safety risk to the shooter and bystanders.

What is 'fire-forming' brass?

Fire-forming is the process where an improperly sized cartridge case expands upon firing to fill the dimensions of the firearm's chamber. This often occurs when using ammunition of a different caliber than the rifle is designed for, resulting in significantly deformed brass casings that are typically unusable.

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