Underwood XTP Ammo 10mm, 155 Grain, Jacketed Hollow Point, 20/Box
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This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases.
- This ammo is for cartridge size 10mm Auto.
- The bullet is made from Brass.
- The diameter (caliber) of this bullet is 0.4.
- This bullet weighs 155 grains.
- This bullet leaves the barrel at 1500 feet per second.
- The ammo case is made from Nickel Plated Brass.
- This ammo is a proven round for hunting.
- The bullet in this product does contain lead.
- This round is designed to be supersonic and travels faster than the speed of sound.
- The muzzle energy of this ammo is 775 ft lbs.
- This product has been designed to be an effective choice for the ultimate in self-defense applications.
- The bullet in this product has a Sectional Density, (SD) of 0.138392857142857. SD is the ratio of an object's mass to its cross sectional area with respect to a given axis. It conveys how well an object's mass is distributed (by its shape) to overcome resistance along that axis.
- This ammo IS SAFE to use in a suppressor.
- The bullet in this ammo has a ballistic coefficient (G1) of 0.137 - Generally, the higher the coefficient, the more stable the projectile will be in flight.
- Each box of ammo contains 20 loaded pieces of ammunition.
- This ammo is manufactured by Underwood Ammo
This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases.
- This ammo is for cartridge size 10mm Auto.
- The bullet is made from Brass.
- The diameter (caliber) of this bullet is 0.4.
- This bullet weighs 155 grains.
- This bullet leaves the barrel at 1500 feet per second.
- The ammo case is made from Nickel Plated Brass.
- This ammo is a proven round for hunting.
- The bullet in this product does contain lead.
- This round is designed to be supersonic and travels faster than the speed of sound.
- The muzzle energy of this ammo is 775 ft lbs.
- This product has been designed to be an effective choice for the ultimate in self-defense applications.
- The bullet in this product has a Sectional Density, (SD) of 0.138392857142857. SD is the ratio of an object's mass to its cross sectional area with respect to a given axis. It conveys how well an object's mass is distributed (by its shape) to overcome resistance along that axis.
- This ammo IS SAFE to use in a suppressor.
- The bullet in this ammo has a ballistic coefficient (G1) of 0.137 - Generally, the higher the coefficient, the more stable the projectile will be in flight.
- Each box of ammo contains 20 loaded pieces of ammunition.
- This ammo is manufactured by Underwood Ammo
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Items Like The Underwood XTP Ammo 10mm, 155 Grain, Jacketed Hollow Point, 20/Box
on
04/30/2026
Very nice ammo. Loaded to true original 10mm specs. Not for the limp wristed!
on
12/27/2025
Bought 100 rds to test it out in my Rock Island TAC Ultra HC Handgun 10mm Auto. If you want to fire a full power 10mm round in your firearm, this stuff will turn your ho-hum pistol or revolver into a beast. You can actually feel and hear the difference when you light it off. I'm buying more for sure.
on
06/02/2025
Underwood, Grizzly, and Buffalo Bore seem to be the only ones still loading 10mm to its actual specs these days. Everyone else waters down their ammo, near .40 SW (Short & Weak) levels. I was surprised to see even Speer Gold Dot (200 grain) being watered down to 950ish fps (450 ft/lbs energy). This 155 grain XTP is the perfect self defense round in my opinion. Out of a Glock 29 (3.8 inch barrel) it still moves above 1400fps, and so it expands more reliably than heavier ammo moving slower (looking at you Speer Gold Dot). 4 inch barrels will see 1500fps out of this. 5" barrel actually went above the box velocities. Even compared to Underwood 180 XTP HP, this reliably delivered around 750-780 ft/lbs of energy, where as the UW 180's delivered around 700 ft/lbs. I think you cant go wrong with any Underwoods, I just prefer these due to reliable expansion. Not to mention these are still cheaper than some 9mm defense ammo, you're getting more punch for less $. Let's hold ammo manufacturers accountable and make 10mm great again, support companies like Underwood that actually make real 10mm.
on
05/06/2025
Fast Shipping As Usual Thanks Bud's. Plan On Using This As My EDC Ammo I Haven't Tried Them Yet But Will Be Getting A Few More Boxes To Test At The Range
on
01/25/2025
Ammunition is powerful, accurate, expands very nicely and pack a punch! Tools and Targets had me sold with his youtube review on this and other Underwood loads!
on
11/29/2024
This ammo is loaded hot. Definitely a true 10mm load.
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