The Ruger GP100 is a double/single-action revolver chambered in .357 Magnum, with a 4.2-inch barrel, 7-round cylinder, and a blued alloy steel frame. At 40 ounces it's substantial, but that weight absorbs .357 recoil more effectively than lighter revolvers.
Key Specifications
- Manufacturer: Ruger
- Model: GP100
- Caliber: .357 Magnum
- Barrel Length: 4.2 inches
- Capacity: 7 rounds
- Weight: 40 ounces (2.5 pounds)
- Finish: Blued
- Overall Length: 9.5 inches
- Frame Material: Alloy Steel
- Action Type: Single/Double Action
Detailed Features
The barrel is cold hammer-forged, which contributes to consistent accuracy over the life of the gun. Cushioned rubber grips with hardwood inserts are comfortable during extended range sessions and maintain a firm hold when hands are wet or cold. The fiber optic front sight picks up quickly in lower light, while the adjustable rear sight allows precise elevation and windage correction. A transfer bar safety requires a full trigger pull to fire, which means the hammer can rest on a loaded chamber safely.
Usage Scenarios
The GP100 handles both .357 Magnum and .38 Special, so you can run cheaper .38 for practice and switch to full-power loads when it matters. That flexibility makes it useful at the range and for home defense. Hikers and campers have used it as a sidearm where wildlife is a concern. The combination of 7 rounds and .357 power covers that role adequately. It's not a compact carry gun; the size and weight are better suited to a bedside drawer or a holster than a pocket.