Underwood Ammo uses the Speer Bonded jacketed hollow point bullet in this round. The Speer Uni-Core bonding process virtually eliminates core-jacket separation and maximizes weight retention for outstanding penetration and controlled expansion. The casings are nickel plated brass. Nickel plating improves feeding and will not tarnish during storage or when in contact with foreign materials. This ammunition is unrivaled in power and precision.
Features and Specifications:
Manufacturer Number: 149
Caliber: .357 SIG
Bullet Type: Speer Bonded Jacketed Hollow Point
Bullet Weight: 125 Grains
Rounds: 20 Rounds per Box
Muzzle Velocity: 1475 fps
Muzzle Energy: 604 ft/lbs
Bullet Diameter: .355
Jacket Material: Copper
Core Material: Lead
Casing: Nickel Plated Brass
Uses: Personal Protection, Self Defense, Law Enforcement
20 rounds per box. To buy a full case, order 10 boxes.
Ammo Price is per box.
Features and Specifications:
Manufacturer Number: 149
Caliber: .357 SIG
Bullet Type: Speer Bonded Jacketed Hollow Point
Bullet Weight: 125 Grains
Rounds: 20 Rounds per Box
Muzzle Velocity: 1475 fps
Muzzle Energy: 604 ft/lbs
Bullet Diameter: .355
Jacket Material: Copper
Core Material: Lead
Casing: Nickel Plated Brass
Uses: Personal Protection, Self Defense, Law Enforcement
20 rounds per box. To buy a full case, order 10 boxes.
Ammo Price is per box.
5 Ratings
Great SD ammo
Chrono tested using a Sig P239. Also tested Winchester JHP. The P239 isn't a full size handgun. Underwood averaged 1425 fps vs Winchester 1225 fps. So the Underwood is one hot load. Ran a box of 20 with zero malfunctions. Had to make sure it functioned before trusting it for carry purposes. So now the Sig P239 is one of my carry guns using this ammo. It's significantly more powerful than any 9mm or 9mm +P ammo out there. That's not to say a 9mm isn't adequate but I guess it all depends upon how you define "adequate"! Recoil isn't bad at all with the P239. Overall?? Great SD ammo. The best!! Also the P239 in 357 can shoot 40 S&W with a barrel swap. 40 range ammo is cheap so you can practice your handgun skills with the 40. After a case you've pretty much paid for that extra barrel.
November 3, 2018
As advertised
This is the ideal carry ammo. Fun at the range, but too pricey. Reliable in my p239. A good kick, but no 10mm.
July 12, 2018
Unreliable
Completely unreliable ammo. 8 out of 20 failed to eject.
September 19, 2017
Great Produce
FANTASTIC PERFORMANCE enough said
August 23, 2017
Rocket
These projectiles travel so fast at 1,475 fps they are on fire when they leave the barrel.great feeding.no misfeeds,stove pipes,etc.you will not regret buying these.i like to know I have 100% confidence in the firearm (glock) and ammo (underwood)that I carry while off duty.neither will let me down
July 17, 2017