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Underwood 10mm For Sale

Live Inventory
10mm Auto is the cartridge Underwood is best known for, loading it to the original velocity spec that most factory ammo abandoned decades ago. Shop the lineup from lightweight monolithic defensive bullets to heavy hardcast woods loads, in single boxes or bulk. Learn More
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  1. Underwood 10mm Ammo - 200 Rounds of 200 Grain Hard Cast Ammunition

    Image of Underwood 10mm Ammo - 200 Rounds of 200 Grain Hard Cast Ammunition
    $254.99

    1 Review

    21 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
    • 200 Rounds
    • $1.27 per round
    • Made by Underwood

  2. 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

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

    Image of Underwood 10mm Ammo - 20 Rounds of 220 Grain Hard Cast Ammunition
    $26.99
    Add Review

    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

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

    Image of Underwood 10mm Ammo - 20 Rounds of 135 Grain JHP Ammunition
    $24.99
    Add Review

    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

Customer Reviews

Click To Purchase This 10mm Underwood Ammunition
Underwood 10mm Ammo - 200 Rounds of 200 Grain Hard Cast Ammunition
Add review
  • Tim said:

    It is perfect, shot about 30 rounds and was as expected. Not the cheapest but it is quality ammo

Click To Purchase This 10mm Underwood Ammunition
Underwood 10mm Ammo - 20 Rounds of 200 Grain Hard Cast Ammunition
Add review
  • 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.