Built Like a Tank: Does the Ruger GP100 Make Sense for Real‑World Defense?

Ruger GP100 side view

Hey there, fellow gun owner! If you’re on the hunt for a revolver that’s got your back for home defense or range time, you’re in the right spot. We’re diving into the Ruger GP100 Review, breaking down why this classic has been a favorite since 1985. With 27 models in calibers like .357 Magnum, .38 Special, and more, there’s a GP100 for just about any job.

Why should you care? In a world where keeping your family safe is everything, the GP100 is more than a gun—it’s peace of mind. Whether you’re juggling work and kids or just want to be ready for anything, this revolver could be your trusty sidekick. Let’s see if it’s the right fit for you!

Ruger GP100 with 2 speedloaders


Is the Ruger GP100 Right for You?

Grab the GP100 If:

  • You Need a Proven Defender: The .357 Magnum has been stopping threats since 1935. It’s a powerhouse for home defense, hunting, or even target practice.

  • You Want a Do-It-All Gun: This revolver can slip into a bag for errands or stand guard at home. It’s like the Swiss Army knife of firearms!

  • Durability’s Your Thing: Built from stainless steel, the GP100 is tough as nails, ready for years of reliable use.

  • Revolvers Are Your Jam: If you love the simplicity of a revolver, the GP100’s easy operation and safety features make it great, even for new shooters.

  • Family Safety Keeps You Up at Night: The GP100 gives you confidence to protect your loved ones, no matter what.

Skip It If:

  • You’re Pinching Pennies: Guns aren’t cheap, and the GP100 runs $700 used or up to $900 new. If that’s too steep, there are other options.

  • You Want More Bullets: Most models hold 6 or 7 rounds. If you need more firepower, a semi-auto might be better.

  • Concealed Carry’s Your Priority: The GP100’s a bit bulky for hiding under clothes. Check out the Ruger SP101 for easier carry.

  • You Love Semi-Autos: Pistols reload faster and hold more rounds, so if that’s your style, the GP100 might not click.

  • Recoil Worries You: The .357 Magnum kicks hard. The GP100’s weight helps, but if recoil’s a dealbreaker, try .38 Special or another gun.

Ruger GP100 side view


Let’s Talk GP100 Specs

What makes the GP100 tick? Here’s the rundown:

  • Models: 27 total, with 23 in .357 Magnum, plus one each in .22 LR, .327 Federal Magnum, .44 Special, and 10mm Auto.

  • Capacity: Most hold 6 shots, 8 hold 7, one holds 10 (.22 LR), and one holds 5 (10mm Auto).

  • Barrel Lengths: From 2.5” to 6”, so you can pick compact or full-size.

  • Our Test Model: A 4.2-inch barrel, stainless steel, 6 rounds, 40 ounces, and 9.5 inches long.

SpecificationDetails
Models27 total:
23 in .357 Magnum,
1 in .22 LR,
1 in .327 Fed Mag,
1 in .44 Special,
1 in 10mm Auto
Capacity18 models (6-shot),
8 models (7-shot),
1 model (10-shot),
1 model (5-shot)
Barrel Lengths2.5” to 6”
Reviewed Model
– Barrel4.2 inches
– MaterialStainless steel
– Capacity6 rounds
– Weight40 ounces
– Overall Length9.5 inches

You can find all the GP100 info here



Hands On Evaluation


How It Feels

The GP100 feels solid in your hands, thanks to its Hogue Monogrips with texture and grooves for a firm hold. You can swap grips to fit your hand perfectly, and its 40-ounce weight tames recoil, making long shooting sessions a breeze. But, it’s a big gun. If you’ve got smaller hands or conditions like arthritis, it might be tough to handle. My dad, for instance, loves his GP100 but struggles with reloading due to arthritis. Petite folks might find it bulky too. When picking a home defense gun, make sure everyone in the house can use it comfortably.

Carrying It Every Day

Size matters for concealed carry, and the GP100’s no featherweight. It’s a joy to shoot, but at 40 ounces, hiding it under clothes is tricky, especially for smaller folks. Ruger offers eight models with 3-inch or shorter barrels, which help, but it’s still bulkier than ideal. A good belt holster makes it doable, but if concealed carry is your main goal, check out our article, “How the Ruger SP101 Delivers Peace of Mind in Any Emergency” for a smaller, easier-to-carry option.


GP100 Shooting Performance

.357 Magnum Ballistics

The .357 Magnum is why the GP100 shines for self-defense. It’s a beast, delivering 1,200-1,400 fps with 125- or 158-grain hollow points, packing 400-800 foot-pounds of energy. That’s serious stopping power, perfect for home defense or even wildlife threats. In gelatin tests, it penetrates 12-18 inches with expansion over 0.54 inches, hitting the sweet spot for stopping threats safely. Federal’s 154-grain HST JHP, for example, is a top pick for reliable expansion.

Why’s it so trusted? Cops used it for decades because it can punch through barriers like car doors. In rural areas, it’s great for bigger threats, though in cities, watch for over-penetration. Loads like Liberty’s Civil Defense reduce that risk while maximizing impact. The .357’s proven track record in law enforcement and hunting makes it a solid choice. The GP100’s weight softens the recoil, and we got tight groups at 20 yards, though the front sight’s tough in low light.

GP100 Reliability

When it comes to reliability, the GP100 is rock-solid. Its frame can handle .44 Magnum loads, so .357 is a breeze. The triple-locking cylinder keeps everything tight, and we had zero issues after 200 rounds. This is a gun you can trust when it counts.


What Makes It Special?

  • Transfer Bar: Won’t fire if dropped—huge for safety.

  • Adjustable Sights: Fine-tune your aim for any situation.

  • Easy Maintenance: Breaks down with minimal tools.

  • Custom Grips: Make it your own with aftermarket options.

Build Quality and Durability

Stainless steel and a satin finish models mean the GP100 laughs off rust and wear. It’s not the fanciest, but it’s built for real-world use, ready to serve for years.

Ruger GP100 with speedloaders.


Aftermarket Goodies

  • Holsters: Belt, shoulder, or concealed styles.
  • Grips: Rubber, wood, or custom fits.
  • Sights: Upgrade for better low-light visibility.
  • Speed Loaders: For faster reloads.

    You can find all the accessories for your Ruger at the Ruger Shop, Cheaper Than Dirt, and Magpul.



GP100 vs. the Competition

Ruger GP100 vs SP101

The SP101 is smaller and lighter, perfect for slipping into a holster for concealed carry, while the GP100’s larger size makes it a champ for home defense and range time. The GP100’s bigger frame feels more comfortable when shooting, soaking up recoil better, but it’s tougher to hide under a shirt. The SP101, at about 27 ounces, gives you less recoil control but is a breeze to carry all day. For a deeper dive into why the SP101 shines for carry, check out our article, “How the Ruger SP101 Delivers Peace of Mind in Any Emergency”.


Ruger GP100 vs S&W 686

The S&W 686 has a buttery-smooth trigger, especially in single action, and feels like a finely crafted tool, but it’ll cost you more. The GP100, built like a tank, handles heavy .357 loads without flinching and saves you some cash. Many shooters love the 686’s refined fit and finish, but the GP100’s rugged durability makes it a practical pick for tough conditions. Want to know more about the 686? Our article, “Your S&W Model 686 Must-Read!” breaks it down.


Ruger GP100 vs Super GP100

The Super GP100 is a competition beast with an 8-round cylinder and a half-lug barrel for pinpoint accuracy, built for match shooters. The standard GP100 is your all-purpose pal, great for home defense, hunting, or casual plinking. The Super’s specialized design shines in tournaments, but the regular GP100’s versatility fits most folks’ needs just fine.


Ruger GP100 vs Colt Python

The Colt Python’s legendary for its silky double-action trigger and sleek, classic look, but it’s pricier and not as tough as the GP100. The GP100’s built to take a beating and keep going, plus it’s easier on your wallet. If you’re after a collector’s piece or range showstopper, the Python’s your guy, but for everyday reliability, the GP100’s got the edge.


Ruger GP100 vs Taurus 66

The Taurus 66 is a solid budget buy, often hundreds less than the GP100, but it doesn’t match Ruger’s build quality or long-term reliability. The GP100’s sturdier frame and tighter tolerances make it the go-to for serious shooters who want a gun that lasts. While the Taurus can get the job done, many owners say the Ruger’s worth the extra bucks for peace of mind.

Ruger GP100 with cylinder open


Pros and Cons

Pros

  • Exceptional durability and reliability
  • Versatile calibers for multiple uses
  • Effective for home defense
  • Proven design with decades of trust

Cons

  • Higher cost ($700-$900)
  • Limited to 6-7 rounds
  • Bulkier for concealed carry
  • Strong .357 Magnum recoil for novices



Is the Ruger GP100 Worth It?

At $700-$900, the GP100 isn’t cheap, but it’s a long-term investment in safety. Its reliability and versatility make it a no-brainer for anyone serious about protecting their family. You’re getting a gun that’s proven itself for decades.



Frequently Asked Questions

What does the GP100 stand for on a Ruger?

Likely “Gunnar Petersen 100,” though officially a model designation.

Is Ruger GP100 good for concealed carry?

It’s manageable with a holster but less ideal than the SP101 due to size.

What is the best revolver for a beginner?

The GP100’s reliability and .38 Special compatibility make it beginner-friendly.



Conclusion

The Ruger GP100 is a reliable, versatile revolver that empowers responsible gun owners to protect their families. Don’t miss out—consider the GP100 for your next firearm purchase.

How We Tested and Our Methodology

EverydayGunOwner.com conducted extensive hands-on testing, led by David Pitcher, with 30 years of firearms experience. We purchased the GP100 independently, ensuring unbiased results over hundreds of hours.