Why .357 Can Be Sometimes Be More Than Magnum: Remington 158gr SJHP 16" Gel Test

Published on March 23, 2020
Duration: 6:26

This video from ARFCOM News details a ballistic gel test of Remington's 158gr SJHP .357 Magnum ammunition fired from a 16-inch Rossi Model M92 carbine. The test highlights how carbine-length barrels significantly enhance .357 Magnum performance, achieving velocities comparable to some .300 Blackout loads and demonstrating substantial penetration and expansion in ballistic gel. The analysis touches on terminal ballistics theories and the unique behavior of high-velocity pistol rounds fired from rifles.

Quick Summary

Fired from a 16-inch carbine, the Remington 158gr SJHP .357 Magnum achieves velocities around 1700 fps, exceeding handgun performance. This results in enhanced terminal ballistics, including over 20 inches of penetration and significant expansion (0.611"), with fragmentation indicating rifle-like behavior.

Chapters

  1. 00:00Introduction to .357 Magnum Carbines
  2. 00:44Range Testing and High-Speed Footage
  3. 01:32Gel Result Analysis
  4. 03:05Technical Data and Comparisons
  5. 04:46Terminal Ballistics Theory and Conclusion

Frequently Asked Questions

How does .357 Magnum perform from a 16-inch carbine barrel?

When fired from a 16-inch barrel, .357 Magnum, specifically the Remington 158gr SJHP, achieves significantly higher velocities (around 1700 fps) than from a handgun, leading to enhanced penetration (over 20 inches in gel) and expansion (0.611").

What are the terminal ballistics of Remington 158gr SJHP .357 Magnum from a carbine?

The Remington 158gr SJHP .357 Magnum, fired from a 16-inch barrel, demonstrated impressive terminal ballistics with 20.1 inches of penetration, 0.611 inches of maximum expansion, and retained 109.46 grains of its original weight in ballistic gel tests.

Why is .357 Magnum performance enhanced in a carbine?

Carbine barrels, especially those around 16 inches, allow slower-burning magnum powders to achieve a more complete burn, resulting in higher muzzle velocities and improved terminal ballistics compared to shorter handgun barrels.

What is the significance of fragmentation for this .357 Magnum load?

The fragmentation observed with the Remington 158gr SJHP .357 Magnum fired from a carbine is notable because it indicates the round is behaving more like a rifle cartridge due to its high velocity, a departure from typical pistol round performance.

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