Federal HST 124gr +P 9MM Various Barrel Lengths Gel Test 9x19

Published on February 15, 2026
Duration: 10:44

This video from Buckeye Ballistics provides a comprehensive gel test of Federal HST 124gr +P 9mm ammunition across various barrel lengths (3.3" to 10.5"). The expert analysis highlights how barrel length significantly impacts velocity and bullet expansion, with longer barrels generally yielding higher velocities and more dramatic "flowering" of the projectile. The test uses calibrated ballistic gelatin to simulate tissue and offers valuable insights for selecting ammunition based on intended firearm platform.

Quick Summary

Buckeye Ballistics tested Federal HST 124gr +P 9mm across barrel lengths from 3.3" to 10.5". Results showed higher velocities (up to 1393 fps) from longer barrels, leading to more pronounced bullet expansion ('flowering'). Penetration varied, with a 7.5" barrel outperforming a 10.5" barrel due to expansion drag.

Chapters

  1. 00:00Introduction & Velocity Data
  2. 01:17Gel Calibration Explained
  3. 02:51Firearms Used (Taurus, Glock, BC9, AK-V)
  4. 03:31Handgun Gel Test Results
  5. 06:38PCC Gel Test Results
  6. 09:30Final Bullet Comparison

Frequently Asked Questions

How does barrel length affect Federal HST 124gr +P 9mm performance?

Longer barrels significantly increase velocity. For example, a 10.5" barrel yielded 1393 fps, while a 3.3" barrel produced 1111 fps. This higher velocity generally leads to more dramatic bullet expansion and potentially altered penetration dynamics.

What were the results of the Federal HST 124gr +P 9mm gel test?

The test showed consistent expansion across barrel lengths. Higher velocity rounds from longer barrels exhibited more pronounced "flowering" and larger recovered diameters, while penetration varied slightly, with a 7.5" barrel achieving more than a 10.5" barrel in one instance.

What firearms were used in the Buckeye Ballistics gel test?

The test utilized a Taurus GX2 with a 3.3" barrel, a Glock 17 with a 4.5" barrel, a Bear Creek Arsenal BC9 with a 7.5" barrel, and a Palmetto State Armory AK-V with a 10.5" barrel.

Was the ballistic gelatin calibrated correctly for the test?

The host noted the Knox 10% ballistic gelatin was slightly thicker than standard, calibrating at 2.5 inches instead of the typical 2.95-3.75 range. He estimated its performance was closer to 15% density.

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