20rds – 357 Magnum Speer Gold Dot 125gr. JHP Ammo

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20rds – 357 Magnum Speer Gold Dot 125gr. JHP Ammo Details

The 357 Magnum is a powerful weapon indeed. Any layman who wants to provide an example of a big handgun cartridge would likely offer it first. This isn’t to say that your everyday carry wouldn’t be better off with some ammo over others. Chamber this Gold Dot cartridge and you’ll experience firsthand the difference that Speer’s attention to quality delivers.

The Gold Dot bullet is formed according to its manufacturer’s proprietary UniCor process. Because it has been applied to its core electrochemically, the Gold Dot jacket is virtually incapable of separation even as it penetrates some of the toughest barriers an urban environment has got to offer. The Gold Dot’s nose cavity is formed over the course of two stages via a series of die presses: the first controls width of expansion, while the second establishes rate. As the result the Gold Dot is highly dependable, and lethal to boot.

This cartridge’s nickel plated brass casing not only improves the ease with which it can be plunked into a cylinder, but also safeguards it against corrosion. This round’s propellant reliably achieves a muzzle velocity well above the supersonic threshold, and its CCI primer is intensely reliable as well.
  • Ammo Caliber
    357 Magnum
  • Manufacturer SKU
    23920GD
  • Primer Type
  • Muzzle Velocity
    1450
  • Muzzle Energy
  • UPC Barcode
    076683239204
  • Cost Per Round
    $1.70/ppr

Gel test Results

In hopes of giving ourselves and our customers a better idea how this 357 Magnum self-defense ammo would perform if called upon in a self-defense scenario, we tested dozens of the best selling hollow points on the market.

We fired five rounds of this Speer 357 Magnum ammo through a cloth barrier into Clear Ballistics calibrated synthetic gelatin and recorded the results. For these tests, we used a S&W 640 with a -inch barrel. In the photos, graphics and video on this page, you can see specifically how the Speer ammo performed and how it sticks up with the rest of the 357 Magnum ammo we have tested so far.

To read more about our testing procedures and discover what round makes the best self-defense ammo for you head to this page.

Unfired versus Fired Round Comparison

Image detailing before and after firing 20rds – 357 Magnum Speer Gold Dot 125gr. JHP Ammo Image detailing before and after firing 20rds – 357 Magnum Speer Gold Dot 125gr. JHP Ammo

How do the results for this Speer 357 Magnum compare to other Speer Ammo?

20rds – 357 Magnum Speer Gold Dot 125gr. JHP Ammo Gel Test Results

  Median
Bullet Depth (in.) 22.7 23.5 27.5 27.5 34.4
Expanded Diameter (in.) 0.35 0.35 0.35 0.35 0.45
Bullet Weight after shot (gr.) 124.3 124.3 124.6 125.2 125.2
Bullet Velocity (fps) 1165 1179 1190 1226 1276

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