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Underwood Ammunition For Sale

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Underwood built its name loading cartridges to their original full-power specs instead of the watered-down factory standard, across monolithic defensive bullets, hardcast hunting loads, and traditional JHP. Browse every Underwood caliber we stock below, by the box or in bulk. Learn More
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  1. Underwood 9mm +P Ammo - 20 Rounds of 115 Grain JHP Ammunition

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    $19.00
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    11 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type JHP
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1300 FPS
    Muzzle Energy 432 ft lbs
    • 20 Rounds
    • 95¢ per round
    • Made by Underwood

  2. Underwood 9mm +P+ Ammo - 20 Rounds of 115 Grain JHP Ammunition

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    $19.99
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    54 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type JHP
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1400 FPS
    Muzzle Energy 501 ft lbs
    • 20 Rounds
    • $1 per round
    • Made by Underwood

  3. Underwood 9mm Ammo - 20 Rounds of 124 Grain JHP Ammunition

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    $19.99
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    22 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type JHP
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1150 FPS
    Muzzle Energy 364 ft lbs
    • 20 Rounds
    • $1 per round
    • Made by Underwood

  4. Underwood 9mm +P+ Ammo - 20 Rounds of 124 Grain JHP Ammunition

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    $20.99
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    51 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type JHP
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1300 FPS
    Muzzle Energy 465 ft lbs
    • 20 Rounds
    • $1.05 per round
    • Made by Underwood

  5. Underwood 45 ACP Ammo - 20 Rounds of 230 Grain JHP Ammunition

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    $20.99
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    48 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type JHP
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 920 FPS
    Muzzle Energy 432 ft lbs
    • 20 Rounds
    • $1.05 per round
    • Made by Underwood

  6. Underwood 38 Special +P Ammo - 20 Rounds of 125 Grain XTP Ammunition

    Image of Underwood 38 Special +P Ammo - 20 Rounds of 125 Grain XTP Ammunition
    $21.99

    1 Review

    41 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type XTP
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1250 FPS
    Muzzle Energy 434 ft lbs
    • 20 Rounds
    • $1.1 per round
    • Made by Underwood

  7. Underwood 9mm +P Ammo - 20 Rounds of 147 Grain XTP JHP Ammunition

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    $22.99
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    45 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type XTP
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1125 FPS
    Muzzle Energy 413 ft lbs
    • 20 Rounds
    • $1.15 per round
    • Made by Underwood

  8. 40 S&W - 140 Grain Xtreme Penetrator - Underwood - 20 Rounds

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    $23.49
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    22 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Solid Copper
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1200 FPS
    Muzzle Energy 448 ft lbs
    • 20 Rounds
    • $1.17 per round
    • Made by Underwood

  9. Underwood 45 ACP +P Ammo - 20 Rounds of 230 Grain JHP Ammunition

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    $23.99
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    7 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type JHP
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1000 FPS
    Muzzle Energy 511 ft lbs
    • 20 Rounds
    • $1.2 per round
    • Made by Underwood

  10. Underwood 10mm Ammo - 20 Rounds of 135 Grain JHP Ammunition

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    $24.99
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    25 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type JHP
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1600 FPS
    Muzzle Energy 767 ft lbs
    • 20 Rounds
    • $1.25 per round
    • Made by Underwood

  11. Underwood 9mm +P Ammo - 20 Rounds of 90 Grain Xtreme Defender Ammunition

    Image of Underwood 9mm +P Ammo - 20 Rounds of 90 Grain Xtreme Defender Ammunition
    $25.99

    2 Reviews

    45 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Solid Copper
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1475 FPS
    Muzzle Energy 435 ft lbs
    • 20 Rounds
    • $1.3 per round
    • Made by Underwood

  12. Underwood 10mm Ammo - 20 Rounds of 200 Grain Hard Cast Ammunition

    Image of Underwood 10mm Ammo - 20 Rounds of 200 Grain Hard Cast Ammunition
    $26.99

    3 Reviews

    49 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Hard Cast
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1250 FPS
    Muzzle Energy 694 ft lbs
    • 20 Rounds
    • $1.35 per round
    • Made by Underwood

  13. Underwood 9mm +P Ammo - 20 Rounds of 68 Grain Xtreme Defender Ammunition

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    $26.99
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    56 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Solid Copper
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1800 FPS
    Muzzle Energy 489 ft lbs
    • 20 Rounds
    • $1.35 per round
    • Made by Underwood

  14. Underwood 9mm +P+ Ammo - 20 Rounds of 90 Grain Xtreme Defender Ammunition

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    $26.99
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    44 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Solid Copper
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1550 FPS
    Muzzle Energy 480 ft lbs
    • 20 Rounds
    • $1.35 per round
    • Made by Underwood

  15. Underwood 10mm Ammo - 20 Rounds of 220 Grain Hard Cast Ammunition

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    $26.99
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    42 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Hard Cast
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1200 FPS
    Muzzle Energy 704 ft lbs
    • 20 Rounds
    • $1.35 per round
    • Made by Underwood

  16. Underwood 9mm +P+ Ammo - 20 Rounds of 115 Grain Xtreme Penetrator Ammunition

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    $31.99
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    43 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Solid Copper
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1300 FPS
    Muzzle Energy 432 ft lbs
    • 20 Rounds
    • $1.6 per round
    • Made by Underwood

  17. Underwood 300 AAC Blackout Ammo - 20 Rounds of 220 Grain HPBT Ammunition

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    $32.99
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    5 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HPBT
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1030 FPS
    Muzzle Energy 518 ft lbs
    • 20 Rounds
    • $1.65 per round
    • Made by Underwood

  18. Underwood 50 Action Express Ammo - 20 Rounds of 300 Grain FMJ Ammunition

    Image of Underwood 50 Action Express Ammo - 20 Rounds of 300 Grain FMJ Ammunition
    $39.99

    2 Reviews

    55 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type FMJ
    Primer Type Boxer
    Casing Type Nickel-Plated Brass
    Condition New
    Muzzle Velocity 1580 FPS
    Muzzle Energy 1663 ft lbs
    • 20 Rounds
    • $2 per round
    • Made by Underwood

Customer Reviews

Click To Purchase This 38 Special Underwood Ammunition
Underwood 38 Special +P Ammo - 20 Rounds of 125 Grain XTP Ammunition
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  • Arran said:

    The first choice I have for .38 ammo for personal protection in a carry revolver. It hits shockingly hard, gel tests show it going very deep, and its both extremely loud and can shoot some big fire balls out the sides of your gun which is going to scare the shit out of all but the most persistent problem on two or four legs.

Click To Purchase This 9mm Underwood Ammunition
Underwood 9mm +P Ammo - 20 Rounds of 90 Grain Xtreme Defender Ammunition
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  • johny said:

    Other guy whining would like to see higher than 90 grain...well this is 99.5%+ Cu or "copper"...it is not as dense as lead and thus does not have the same weight or grain to it. As good as it gets for what it is, unless you're going to have a longer bullet or wider bullet, there really isn't anyway to add more weight to it...it its a 9x19mm and that's all the weight/grain it will ever have being made of copper.

  • Ricke said:

    Overall a great product, pricey but unique. unlike others have been tried, these are true to purpose. I would like to see a higher grain than 90 for this ammo.

Click To Purchase This 10mm Underwood Ammunition
Underwood 10mm Ammo - 20 Rounds of 200 Grain Hard Cast Ammunition
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  • Robert said:

    This ammo is more consistent, accurate, and powerful than 10mm range ammo. I was amazed at how well I shot out of my Glock 20 Gen 5. My confidence that I can employ this ammo for bear defence has grown significantly. It feeds and cycles without issue.

  • Ridge Runner said:

    Awesome stuff. These Hard Cast rounds really penetrate. In fact in out did my 357mag in a ballistic gel block. The 10mm penetrated a full 4 inches more than my 357mag.. I will be getting several more boxes of these hard cast rounds...

  • Carl said:

    Great deal price could be lower.

Click To Purchase This 50 Action Express Underwood Ammunition
Underwood 50 Action Express Ammo - 20 Rounds of 300 Grain FMJ Ammunition
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  • Good product said:

    Nice

  • Dan said:

    Everything performed well, no duds no hangups