A Beast of a Cartridge! .45-70 HSM 430gr +P RNFP Gel Test

Published on November 22, 2019
Duration: 5:55

This video provides an expert-level analysis of the HSM .45-70 Govt 430gr +P RNFP 'Bear Load' ammunition. Through rigorous testing involving a Marlin Model 1895 Trapper, chronograph readings, and ballistic gel tests conducted with high-speed cameras, the instructor demonstrates the cartridge's significant power and deep penetration capabilities. The analysis connects modern ballistics with historical context, offering insights into its effectiveness for big game hunting while acknowledging the substantial recoil.

Quick Summary

The HSM .45-70 Govt 430gr +P RNFP 'Bear Load' ammunition delivers exceptional performance for big game hunting, achieving an average velocity of 1703.8 FPS and demonstrating complete penetration in ballistic gel tests. This powerful load requires modern firearms rated for +P pressures and a shooter capable of managing its significant recoil, offering deep penetration and massive tissue damage.

Chapters

  1. 00:00Introduction to .45-70 Govt HSM 430gr +P
  2. 01:16Velocity Testing with Marlin 1895 Trapper
  3. 02:01Ballistic Gel Test Setup
  4. 02:52Data Analysis and Terminal Ballistics
  5. 04:20Conclusion and Use Cases

Frequently Asked Questions

What is the HSM .45-70 Govt 430gr +P RNFP 'Bear Load' ammunition designed for?

This ammunition is specifically designed for big game hunting, emphasizing deep penetration and significant tissue damage. Its robust construction and +P pressure rating make it suitable for large North American game, provided the shooter can manage the substantial recoil.

What were the key performance metrics from the ballistic gel test of the HSM .45-70 Govt 430gr +P RNFP?

The test recorded an average velocity of 1703.8 FPS and demonstrated complete penetration through two blocks of ballistic gel. The large 430gr RNFP bullet created a notable temporary stretch cavity, indicating effective energy transfer.

Is the HSM .45-70 Govt 430gr +P RNFP suitable for all .45-70 firearms?

No, the '+P' designation signifies higher pressure loads. This ammunition requires modern firearms with superior metallurgy, such as the Marlin Model 1895 Trapper tested, to safely handle the increased stress. Older firearms may not be rated for these pressures.

What is the significance of the RNFP bullet type in the .45-70 HSM load?

The Round Nose Flat Point (RNFP) design enhances feeding reliability in lever-action rifles and contributes to effective energy transfer upon impact. Its weight and shape are optimized for deep penetration and creating a significant wound channel in large game.

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