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357 Sig 125 Grain Bonded Jacketed Hollow Point

0.69 LBS

Product Description

Underwood Ammo’s bonded rounds are unrivaled in power and precision. We utilize Speer bonded bullets which employ an exclusive Uni-Cor process where they bond the jacket to the core one molecule at a time. This essentially eliminates core-jacket separation, maximizes weight retention, and allows for unparalleled penetration and controlled yet fatal expansion. 

As with all of Underwood Ammo’s rounds, we utilize flash suppressed powder so that your vision will not be compromised if it becomes necessary to use your firearm in low light. 

Nickel plated casings with our new nickel plating process provides several key benefits, not limited to but including; improved feeding in all actions of firearms, enhanced corrosion resistance over traditional brass, improved cosmetics, and ease of cleanup during reloading.  Nickel plated casings will not tarnish like brass during storage or when in contact with foreign materials such as leather, moisture, and other metals.

While taking advantage of our state of the art testing equipment, this high performance ammunition is field tested using popular, real firearms that our customers are most likely to own out in the real world with all the elements you would experience. If for some reason Underwood Ammunition fails to meet performance expectations, we stand by our product 100% and will make sure the customer is satisfied with every purchase.

This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases.


Technical Information

  • Caliber: 357 Sig
  • Bullet Weight: 125 Grains
  • Bullet Style: Speer Bonded Jacketed Hollow Point
  • Case Type: Ducta-Bright 7a Nickel Plated Brass
Ballistics Information:
  • Muzzle Velocity: 1475 fps
  • Muzzle Energy: 604 ft. lbs.

Product Reviews

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Showing reviews 1-10 of 56 | Next

  1. G31 Velocity 5 Star Review

    Posted by on 13th Dec 2016

    Decided to chrono a few of these from a stock Glock 31. 5 rounds fired over a pro chrony and average velocity was 1555 fps!!! I also had some of their 125 sierra hollow points and they averaged 1544 fps! I carry these two loads daily staggered in my magazines. Awesome performance I trust my life to. Great job underwood! I will continue to purchase more.

  2. my favorite everyday carry round by far 5 Star Review

    Posted by on 23rd Nov 2016

    A lot of people don't really get to see what type of damage their personal defense ammo actually does to flesh. I have. I seen it first hand while hunting in Northern Nevada for mule deer with my son. He shot his deer around 300 yards away with his 243 and it went down. As we were approaching it from about 15 yards away,i seen that it was still alive,and decided to pull out my glock 32 in case it decided to charge.As soon as it stood up i knew i would have to fire on him. I fired one shot that hit him through the lungs and it went down immediately. I wont go into detail about the initial impact and what occured but i will say that i would trust my life with this bullet against any threat to me or my family.Great product and I will definitely purchase more.

  3. Great round 5 Star Review

    Posted by on 20th Nov 2016

    Very consistant on loading, and has the energy the .357sig was designed to deliver. All of the major manufacturers have watered down the .357sig, but Underwood delivers what it was meant to be.

  4. Outstanding! 5 Star Review

    Posted by on 16th Nov 2016

    As usual, underwood gets it right! .357 sig the way it should be loaded, clean and very accurate. Very fast round, underwood with bonded hollow points are the only self defense rounds I carry. I highly recommend this ammo!!!

  5. My New CCW Ammo 5 Star Review

    Posted by on 30th Oct 2016

    This is my new carry ammo for my SIG P229. I did my research prior to purchasing and fired a couple hundred rounds through my weapon, and there were no issues. The service was speedy and professional. I will be a return customer.

  6. Premium Ammo! 5 Star Review

    Posted by on 29th Oct 2016

    The best self defense rounds available. Having these rounds in my mags/handgun gives me 100% confidence if I ever have to use it.

  7. Best of the best 5 Star Review

    Posted by on 8th Oct 2016

    Coupling the 125 gold dot in the Underwood loading was a perfect match. This is truly as good as the 357 sig gets. Shoots nicely out of my M&P compact. Accurate and stout. Have no question that if I do my part, this round will be the final word.

  8. Awesome brand!! 5 Star Review

    Posted by on 18th Sep 2016

    Best-Fast-Powerful 357 Sig SD round on a market thumbs up, Underwood should always have this ammo in stock, would be even better if big sports&hunting stores that close to my area have this brand on a shelf, so i don't have to pay for shipping and wait.

  9. Very accurate 5 Star Review

    Posted by on 14th Sep 2016

    Very accurate and powerful ammo...not watered down or weak. Feeds flawlessly and smooth...I'll definitely buy Underwood ammo

  10. typical underwood quality 5 Star Review

    Posted by on 6th Sep 2016

    I haven't fired these yet, but they shipped fast. I expect them to be like everything else I've ever used from Underwood Ammo--top of the line.

Showing reviews 1-10 of 56 | Next

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