Underwood 10mm Ammo
(3)
Underwood Ammunition 10mm Auto 200 Grain Hornady XTP Jacketed Hollow Point Box of 20
Brand:
Underwood Ammo
Bullet Type:
Jacketed Hollow Point (JHP)
Caliber:
10mm Auto
Capacity:
20
Finish Per Color:
Nickel Plated Brass
Grains:
200 grain
From:
$22.99
13
(1)
Underwood 10mm Auto 220gr 20rd 10bx/cs Hard Cast Lead Fn
Brand:
Underwood Ammo
Bullet Type:
Hard Cast Flat Nose (HCFN)
Caliber:
10mm Auto
Capacity:
20
Finish Per Color:
Nickel Plated Brass
Grains:
220 grain
From:
$23.05
13
(1)
10mm Auto - 200 grain - Hard Cast - Underwood - 20 Rounds
Brand:
Underwood Ammo
Bullet Type:
Hard Cast Flat Nose (HCFN)
Caliber:
10mm Auto
Capacity:
20
Finish Per Color:
Nickel Plated Brass
Rounds:
20
From:
$24.52
14
(0)
10mm Auto 115 Grain Xtreme Defender (Platinum Edition) 20/R - Nickel Plated Brass Casing
Brand:
Underwood Ammo
Caliber:
10mm Auto
Grains:
115 grain
Rounds:
20
(0)
Range Supply 10mm Auto 180 Grain Full Metal Jacket 50/RD - Brass Casing
Brand:
Underwood Ammo
Bullet Type:
Full Metal Jacket
Caliber:
10mm Auto
Grains:
180 grain
Rounds:
50
(0)
UNDERWOOD 10mm Automatic, 180gr, Jacketed Hollow Point, 20rd
Brand:
Underwood Ammo
Bullet Type:
Jacketed Hollow Point (JHP)
Caliber:
10mm Auto
Capacity:
20
Finish Per Color:
Nickel Plated Brass
Rounds:
20
(0)
10mm - 200 Grain Nosler JHP - Underwood - 20 Rounds
Brand:
Underwood Ammo
Bullet Type:
Hollow Point
Caliber:
10mm Auto
Rounds:
20
Marketplace Insights
★ 5.0/5
based on 5 customer reviews across 7 products from 14 retailers
Premium 10mm ammunition highly trusted by hunters and backpackers for dangerous game defense, praised for reliability and stopping power.
What customers like
Reliable & Consistent60%
Very high quality ammo, consistent and reliable shooting.
Large Game Defense60%
This is the ammo I trust when hiking in grizzly country.
Full Power & Impact40%
This stuff hits with authority
Hunting & Self Defense40%
hunting & self defense. Always reliable Count on That!.
Common concerns
Recoil/Hand Discomfort20%
Puts a stinging on your hand if not looking for it
Frequently Asked Questions
Underwood 10mm Ammo
Is Underwood 10mm ammo good?
Underwood 10mm ammo is well-regarded for reliability, consistent performance, and strong penetration, making it popular for hunting and self-defense. It runs around $26 per box and comes in several load variants. Most users report flawless feeding and recommend it for defensive use rather than budget range practice.
What is the hardest hitting 10mm ammo?
Buffalo Bore's hard cast load delivers the most raw energy and sets the standard for hard-hitting 10mm ammo. For self-defense, Underwood's 140-grain Xtreme Penetrator and Buffalo Bore's 155-grain TAC-XP are top choices. Heavier bullet weights generally produce the hardest hit.
What grain is best for 10mm?
For self-defense, 180–200 grain is standard, with 200gr loads like Federal HST and Speer Gold Dot being common choices. Hunting favors heavy 180–200 grain hardcast loads for deep penetration on game. Target shooting works well with lighter 100–125 grain loads. Match grain weight to your intended use.
What is underwood 10 mm 200 grain hard cast?
Underwood's 10mm 200 grain hard cast is a flat-nose, non-expanding hunting and defense round with a Black Cherry-coated lead bullet that resists fouling. It penetrates deeply, works in all 10mm pistols including polygon-rifled barrels, and typically sells for around $26 per box.
What is the difference between Underwood 200 and 220?
The Underwood 200gr hard cast travels faster with a flatter trajectory, while the 220gr delivers greater penetration and momentum. Both use hard cast lead. Choose 200gr for speed or 220gr for heavier game requiring deeper penetration.
How much does Underwood 10mm ammo cost?
Underwood 10mm ammo typically costs around $26 per box, with listings ranging from $22 to $149 depending on the specific load and retailer. Seven variants are currently in stock across fifteen retailers on our marketplace.
Is underwood or buffalo bore better?
Both brands use hard cast bullets with similar ballistics. Underwood typically costs less per box than Buffalo Bore. Underwood offers better retail availability and consistent customer service. For most applications, performance differences between the two are negligible.
Is Underwood Xtreme Defender good?
Underwood Xtreme Defender performs well for self-defense and woods carry. The fluted monolithic bullet uses hydraulic pressure rather than traditional expansion, driving deep penetration. It's a capable defensive load, though the higher price makes it impractical for regular range use.
