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

Published on December 19, 2012
Duration: 2:31

This video provides an expert-level ballistics gel test of Underwood Ammo's 10mm 155gr Gold Dot JHP from a Glock 20 Gen4. The test, conducted by Mrgunsngear, details projectile expansion, penetration, and weight retention, offering valuable data for self-defense and duty applications. The instructor highlights the bullet's performance despite its design origins, showcasing its effectiveness.

Quick Summary

The Underwood 10mm 155gr Gold Dot JHP achieved an average velocity of 1443 fps from a Glock 20 Gen4. It expanded to a maximum of 0.847 inches, penetrated 13.5 inches into ballistics gel, and retained 100% of its 155-grain weight, demonstrating excellent performance.

Chapters

  1. 00:00Introduction and Ammunition Overview
  2. 00:24Firearm Specifications
  3. 00:35Chronograph Velocity Testing
  4. 00:44Ballistics Gel Shot
  5. 00:48Wound Track Analysis
  6. 01:31Expansion and Weight Retention
  7. 01:42Performance Summary

Frequently Asked Questions

What was the average velocity of the Underwood 10mm 155gr Gold Dot JHP from a Glock 20 Gen4?

The average velocity recorded for the Underwood 10mm 155gr Gold Dot JHP from a Glock 20 Gen4 was approximately 1443 feet per second, with individual readings ranging from 1393 to 1474 fps.

How much did the Underwood 10mm 155gr Gold Dot JHP expand in ballistics gel?

The Speer Gold Dot JHP bullet expanded significantly, with the maximum expansion measured at 0.847 inches and the minimum expansion at 0.776 inches.

What was the penetration depth and weight retention of the Underwood 10mm 155gr Gold Dot JHP?

The bullet penetrated 13.5 inches into the ballistics gel and retained 100% of its original weight (155 grains), indicating excellent structural integrity.

Was the Underwood 10mm 155gr Gold Dot JHP effective despite its design origins?

Yes, the bonded Gold Dot bullet performed exceptionally well in the 10mm Auto cartridge, exceeding expectations and demonstrating reliable expansion and weight retention, even though it may have been designed with .40 S&W velocities in mind.

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