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Underwood Ammo 9mm Luger +P 147 Grain Coated Hard Cast Nickel Plated Brass Cased Pistol Ammunition
$44.60 $26.49 Save 41%
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Most Helpful Positive Review Accurate accurate accurate
I was planning a trip to bear country and needed an appropriate ammo. A review said, Underwood hard cast in 10MM or 9MM. My favorite weapon a Sig365 Tacops shoots this ammo well. The first 17 round magazine resulted in 17 rounds inside a four inch circle at 26 yards, unsupported. Shoot several for penetration into wood. This was the first 9mm to penetrate the wood backstop. I was really happy with this ammo and felt confident carrying it in bear country. Luckily it was not needed, but I felt sure it would do the job if called upon.
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Bear Safe- Big OpticsPlanet fan

by Dr Bjorn, Verified Owner from TX, United States Written on June 17, 2026
I am new to Optics Planet but have geared up in a big way for an upcoming trip. I have since bought one of everything. This was one of my most recent orders. I bought a qty 20 pack and paired it with other ammo to share the one time processing fee across several other rounds. The pricing is competitive, but specifically for harder to get rounds it’s a good spot to purchase (with orders of other ammo to share the process fee-reasonable).
Would recommend: Yes
Was it helpful to you? Yes | No

Product failure.

by Jim, from ID, United States Written on May 23, 2025
I have bought a few hundred dollars worth of Underwood handgun ammo in several caliber. Most has been fine but some has not, primers not seated will that prevent revolver cylinder from rotation. The company has not responded to myrepeated calls and emails asking for help.
Pros:
  • Nice package
Cons:
  • None
Would recommend: No
Was it helpful to you? Yes | No

Hard Cast is the way

by MEW, Verified Owner from FL, United States Written on July 17, 2024
My son and his boys go hiking in the PNW and there is always a concern of dangerous critters both 4 legged and 2 in the boonies. As he only has a 9mm that he concealed carries I bought these for him in a "just in case" scenario when off the beaten path. Underwood is the way to go and now he can pack a couple mags of these heavy hitters and not feel unprepared.
Pros:
  • Top of the line
Cons:
  • None
Best Used for:
  • dangerous situations requiring penetration
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Run what you brung

by R9mm87, Verified Owner from MI, United States Written on May 18, 2024
Great option for those of us that don’t have a 10mm, and don’t want to get one for the few times a year that we might need a deep penetration round. Functioned well in my p365x
Would recommend: Yes
Was it helpful to you? Yes | No

Everything from Underwood is SOLID!

by Buckrub71, Verified Owner from PA, United States Written on April 9, 2024
For the past 5 years I have been purchasing and using Underwood Ammo -- highly recommend their freedom seeds!
Would recommend: Yes
Was it helpful to you? Yes | No

So far so good

by Chris, from IA, United States Written on January 12, 2024
I have not shot this ammo yet, but it was delivered quick and the packaging is good. It's also a better price point than other ammo in this category.
Pros:
  • Packaging
Cons:
  • None
Best Used for:
  • predator defense
Would recommend: Yes
Was it helpful to you? Yes | No

P320 PMM ULTRA JTTC on 3.6 slide

by bchewy, Verified Owner from WA, United States Written on August 4, 2022
Recently build P320 with PMM Ultra Comp. I need some UMMMPH! to punch thru the comp. Burned a 100 round, no stove pipe, not even once. and it is a little too smokey, expensive, but does the job. I would buy again if it was a little cheaper.
Pros:
  • Packs a punch!!!
Cons:
  • Expensive!!
Best Used for:
  • comps
Would recommend: Yes
2 of 3 found the following review helpful.
Was it helpful to you? Yes | No
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Last updated 2025-11-12 UTC.