Heavy vs Light...Is Either One "Just Right?" Underwood .357 Sig Self-Defense AMMO Test!

Published on March 10, 2024
Duration: 15:20

This video presents a ballistic test of two Underwood .357 Sig self-defense ammunition loads: a 115-grain Nosler ASP and a 147-grain Hornady XTP. The test involves firing rounds through a heavy clothing barrier into ballistic gel to evaluate velocity, expansion, fragmentation, and penetration. The presenter, experienced in firearms testing, notes that while both rounds performed adequately, neither weight (115gr or 147gr) is his preferred choice for .357 Sig, favoring a 125-grain projectile for this caliber.

Quick Summary

In a ballistic test of Underwood .357 Sig ammunition, the 115-grain Nosler ASP averaged 1521 fps and fragmented heavily, while the 147-grain Hornady XTP averaged 1249 fps and showed irregular expansion. The presenter favors 125-grain projectiles for .357 Sig, finding neither tested weight optimal.

Chapters

  1. 00:00Introduction & Setup
  2. 00:41Ammunition Overview: 115gr vs 147gr .357 Sig
  3. 01:55Firearm Used: Glock 22 w/ .357 Sig Barrel
  4. 02:14Velocity Test: 115gr Underwood .357 Sig
  5. 03:54Velocity Test: 147gr Underwood .357 Sig
  6. 05:25Ballistic Gel Test: 115gr vs 147gr .357 Sig
  7. 06:04115gr Gel Results & Analysis
  8. 06:14147gr Gel Results & Analysis
  9. 07:31Overall Gel Performance & Presenter's Opinion
  10. 09:41Close-up Gel Examination
  11. 10:49Projectile Examination
  12. 11:56Projectile Weight Retention
  13. 12:27Projectile Expansion Measurements
  14. 13:01Final Thoughts & Caliber Preference
  15. 14:02Conclusion & Viewer Engagement

Frequently Asked Questions

What were the average velocities for the Underwood .357 Sig ammunition tested?

The Underwood 115-grain .357 Sig Nosler ASP averaged 1521 feet per second, while the 147-grain Hornady XTP averaged 1249 feet per second over five-round tests.

How did the 115-grain and 147-grain .357 Sig rounds perform in ballistic gel?

The 115-grain round fragmented significantly, losing weight and jacket material. The 147-grain round showed some expansion but also irregular expansion and a tendency to turn backward.

What is the presenter's preferred projectile weight for .357 Sig?

The presenter expressed a preference for 125-grain projectiles for the .357 Sig caliber, finding neither the 115-grain nor the 147-grain loads to be ideal for his personal use.

What were the penetration depths for the tested .357 Sig rounds?

The 115-grain .357 Sig round penetrated 15.2 inches, while the 147-grain rounds achieved penetration depths of 18 inches and 18.5 inches in the ballistic gel.

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