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.
- Caliber: 357 Sig
- Bullet Weight: 125 Grains
- Bullet Style: Speer Bonded Jacketed Hollow Point
- Case Type: Ducta-Bright 7a Nickel Plated Brass
- Muzzle Velocity: 1475 fps
- Muzzle Energy: 604 ft. lbs.
Showing reviews 1-10 of 49 | Next
Posted by Andrei 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.
Posted by Daniel McElroy on 14th Sep 2016
Very accurate and powerful ammo...not watered down or weak. Feeds flawlessly and smooth...I'll definitely buy again...live Underwood ammo
typical underwood quality
Posted by Jason Kavalary 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.
What .357 sig should be
Posted by peter boese on 23rd Jul 2016
After using this I wouldn't use any other .357 Sig SD ammo.
Best of the best
Posted by Richard Taracka on 17th Jul 2016
Purchased this ammo for self Defense purposes. It feeds perfectly in my P226 and is very accurate. Thanks for a great product.
759 ft/lbs from a 6" 357 Sig
Posted by Jim on 11th Jul 2016
Chrono'd this load out of a 6" KKM barreled Glock 35. 71 degrees, 62% humidity. Out of 6 chrono'd shots, an average of 1654FPS, equating 756 ft/lbs of energy. Plus it's a bonded bullet. Holy cow. I'd love to put one of these into a block of gel to see what happens. haha.
Posted by Chris Holbrook on 28th Jun 2016
I just got my Sig P320 in 357sig and couldn't wait to shoot it for the first time. I alternated between the 147 grains and 125 grain gold dots and wow! These are hard hitting, powerful, extremely accurate rounds. Follow up shots were no problem. Double taps no problem. Recoil was not bad at all considering how hot these are loaded. definitely my new Every Day Carry round.
Posted by Chris Mcginnis on 5th Jun 2016
Great round light muzzle flash
357 sig how it's supposed to be
Posted by Iron Christ on 15th May 2016
These are the best 357 sig self defense rounds on the market. Period. Don't believe me watch tntoutdoors on youtube.
Best .357 SIG Produced
Posted by Unknown on 7th May 2016
This round is the best .357 SIG round manufactured today. Gold Dot bullet is excellent. Velocity and energy is what you would expect from a .357 SIG (vs other brands that are downloaded to 9mm +P levels). I carry it in all my off duty weapons.
Showing reviews 1-10 of 49 | Next