Underwood Ammo 10mm 155gr Gold Dot Ballistics Gel Test From A Gen4 Glock 20 (HD)

Published on December 19, 2012
Duration: 2:31

This expert-level review by Mrgunsngear details a ballistics gel test of Underwood Ammo's 10mm 155gr Gold Dot JHP from a Gen4 Glock 20. The test provides crucial data on velocity, expansion, and weight retention, demonstrating the ammunition's performance characteristics. The instructor's authoritative assessment highlights the bullet's effectiveness despite its design origins.

Quick Summary

The Underwood Ammo 10mm 155gr Gold Dot JHP averaged 1443 fps from a Gen4 Glock 20, achieving 100% weight retention and expanding to a maximum of 0.847 inches. This performance generated approximately 716 ft-lbs of muzzle energy.

Chapters

  1. 00:00Introduction & Ammunition Overview
  2. 00:24Firearm & Setup
  3. 00:35Chronograph Velocity Testing
  4. 00:44Ballistics Gel Shot & Wound Track
  5. 01:31Expansion & Weight Retention Analysis
  6. 01:42Performance Summary

Frequently Asked Questions

What were the chronograph results for Underwood Ammo 10mm 155gr Gold Dot JHP from a Gen4 Glock 20?

The Underwood Ammo 10mm 155gr Gold Dot JHP averaged 1443 feet per second (fps) from a Gen4 Glock 20 with a standard barrel. Individual readings were 1461 fps, 1474 fps, and 1393 fps.

How did the Underwood 10mm 155gr Gold Dot JHP perform in ballistics gel regarding expansion and weight retention?

The bullet expanded to a maximum of 0.847 inches and a minimum of 0.776 inches. It demonstrated 100% weight retention, with the recovered bullet weighing its original 155 grains (10 grams).

What is the muzzle energy of Underwood Ammo 10mm 155gr Gold Dot JHP when fired from a Glock 20 Gen4?

When fired from a Gen4 Glock 20, the Underwood Ammo 10mm 155gr Gold Dot JHP generated approximately 716 foot-pounds (ft-lbs) of muzzle energy.

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