Were We Wrong About Prvi Partisan 75gr BTHP?

Published on May 13, 2019
Duration: 5:39

This video re-evaluates Prvi Partisan 75gr BTHP ammunition, initially tested from a 16-inch barrel with positive results. Subsequent testing from a 10.5-inch barrel using real ballistic gelatin revealed significantly reduced performance, including lack of fragmentation and increased ice-picking. The speaker attributes this to a potential change in propellant or charge by the manufacturer, leading to lower velocities compared to older batches.

Quick Summary

Testing Prvi Partisan 75gr BTHP from a 10.5-inch barrel in real ballistic gelatin revealed poor performance, with minimal yawing and no fragmentation. This is attributed to reduced velocity (around 2200 fps) compared to older loads or testing from a 16-inch barrel, suggesting potential changes in the ammunition's propellant.

Chapters

  1. 00:02Introduction and Previous Test Recap
  2. 00:2910.5" Barrel Test in Clear Gel
  3. 02:00Real Ballistic Gelatin Test Setup
  4. 02:4110.5" Barrel Test Results in Real Gel
  5. 03:27Disappointment and Previous Recommendations
  6. 03:53Analysis of Performance Discrepancy
  7. 04:41Is it Still Useful for Defense?
  8. 05:03Conclusion and Further Questions

Frequently Asked Questions

How did Prvi Partisan 75gr BTHP perform from a 10.5-inch barrel?

From a 10.5-inch barrel, the Prvi Partisan 75gr BTHP showed disappointing performance in real ballistic gelatin. It exhibited minimal yawing and no fragmentation, with the bullet ice-picking through the gel. This suggests insufficient velocity for reliable expansion from shorter barrels.

Why did the performance of Prvi Partisan 75gr BTHP change between barrel lengths?

The significant difference in performance between 10.5-inch and 16-inch barrels is likely due to reduced velocity from the shorter barrel. The speaker suggests Prvi Partisan may have altered propellant charges, leading to lower velocities in current production loads, impacting fragmentation and expansion.

Is clear ballistic gel reliable for testing rifle ammunition?

Clear ballistic gel can be inaccurate for testing rifle projectiles, potentially yielding different penetration and expansion results compared to real ballistic gelatin. While it may suffice for pistol hollow-points in informal tests, real gelatin is preferred for rifle ammunition evaluation.

What velocity was recorded for Prvi Partisan 75gr BTHP from a 10.5-inch barrel?

During the test with the 10.5-inch barrel, the Prvi Partisan 75gr BTHP ammunition recorded an average velocity of approximately 2200 feet per second. This is notably slower than previous tests conducted with longer barrels or older ammunition batches.

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