Is This AMMO "The Same Thing?" Which one is BEST?

Published on January 14, 2023
Duration: 12:33

This video compares the Underwood Extreme Defender and Inceptor ARX 9mm ammunition through gel testing. Both projectiles demonstrated excellent disruption and penetration, achieving similar wound channels and stopping approximately 15-16 inches into the gel block. The Inceptor ARX, a lighter 65-grain projectile, achieved higher velocities (1550 fps average) compared to the 90-grain Underwood Extreme Defender (1268 fps average) when fired from a 3-inch barrel Sig Sauer P365. Despite material and design differences, their performance in gel was deemed comparable for practical purposes.

Quick Summary

In a gel test comparing Underwood Extreme Defender and Inceptor ARX 9mm ammunition from a 3-inch barrel Sig P365, both projectiles showed comparable performance. The Extreme Defender averaged 1268 fps, while the ARX averaged 1550 fps. Both achieved significant disruption and penetration around 15-16 inches, making them effective self-defense options.

Chapters

  1. 00:00Introduction & Setup
  2. 00:10Ammo Comparison: Underwood vs Inceptor
  3. 00:34Underwood Extreme Defender Details
  4. 01:11Inceptor ARX Details
  5. 01:54Test Firearm: Sig P365 3-inch Barrel
  6. 02:19Extreme Defender Velocity Test
  7. 03:06Inceptor ARX Velocity Test
  8. 04:47Gel Test: Inceptor ARX
  9. 05:53Gel Test: Underwood Extreme Defender
  10. 06:21Gel Test Results Analysis
  11. 06:33Inceptor ARX Wound Channel
  12. 07:22Extreme Defender Wound Channel
  13. 07:45Penetration Measurements
  14. 08:43Projectile Examination
  15. 09:31Projectile Measurements
  16. 10:23Conclusion: Are They The Same?
  17. 11:01Final Thoughts on Fluted Rounds

Frequently Asked Questions

How did the Underwood Extreme Defender and Inceptor ARX 9mm perform in gel tests?

Both the Underwood Extreme Defender and Inceptor ARX 9mm demonstrated excellent performance in gel testing, creating significant disruption and wound channels. They achieved comparable penetration depths of approximately 15-16 inches, with projectiles remaining mostly intact and facing forward.

What were the average velocities of the Underwood Extreme Defender and Inceptor ARX 9mm from a 3-inch barrel?

From a 3-inch barrel Sig Sauer P365, the Underwood Extreme Defender (90 grain) averaged 1268 fps, while the Inceptor ARX (65 grain) averaged 1550 fps. Both were below their advertised velocities but the ARX maintained a notable speed advantage.

What are the key differences between Underwood Extreme Defender and Inceptor ARX 9mm ammunition?

The Underwood Extreme Defender is a 90-grain solid copper projectile with a nickel-plated case and straight flutes. The Inceptor ARX is a lighter 65-grain projectile made from a copper and polymer blend, featuring spiraling flutes and a standard brass case. The ARX also exhibited lighter recoil.

Which 9mm ammunition is better for self-defense: Underwood Extreme Defender or Inceptor ARX?

For practical self-defense purposes, both the Underwood Extreme Defender and Inceptor ARX 9mm rounds performed very similarly in gel tests, offering excellent disruption and penetration. The choice may come down to availability and price, as their effectiveness in this test was comparable.

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