AMMO TEST: 10mm Underwood 200 Gr Hornady XTP JHP




What do you think about this video?

Kahrman: tnoutdoors9, thank you for all the testing you do and sharing the info. Need advice on 10mm ammo From all of your testing can you tell me what would be the best loads for a Glock 29 Gen 4 pistol for home protection and woods protection? Looking forward to your responses. Thanks in advance for your help.

Ronaldo Crespin: If were rolling the dice on this one, then I just don't know what to think. I have a pretty good feeling about this round being able to stop the threat. I do not have an extensive knowledge of ballistics, but I am confident that this round would be pretty close to the top of the list when it comes to stopping power, for a handgun round anyway.

Johnny Wright: The 200 grain nosler was designed for DT for the 10mm at high velocities. Underwood is loading them now at higher velocities and I will tell you that the nosler performs like a hot 10 should. I hand loaded them for my 6.6 inch LWD long slide with 11 grains of blue dot and was clocking in at 1400 fps. They looked like a 308 soft point pulled out of a deer when I did my wet pack test. I dropped many big tx hogs at 100 yards and a doe at 175 yards that dropped in her tracks. I practice extensively at long range and have been doing so with my Luger navy long barrel with pop up sights since I was 8. The main thing with 10mm on deer is know your ammo and if you have doubts use hard cast and remember exactly where you shot it and blood track it. I've never had any issues however with XTPs with any velocities. I've taken pigs with XTPs in a Glock 19 with complete pass through. However, I shoot them in the head and there's no reason not to. They're head area is just about as big as the lung area. But down here if we don't have to drag them off the road it's a good thing. They are varmint and unless it's less than 30lb for eating or a monster and I want pics, they're getting tossed or sold to the Mexican's for tamales. 

Cleatus Van Damne: 10mm and .45 Super make me all happy face.

Wraithiss: That appeared to have much more consistent expansion than the Gold Dot loading from Underwood. I wonder if that is just an anomaly, or if its indicative of something.

Stefano Dogg: The 135 grain Nosler load is a far better choice for civilian self defense against bipedal hyenas. Underwood just restocked, I bought 6 boxes of the aforementioned for street carry, and a buddy of mine and are loading the same load for practice and zombie apocalypse ammo. You do great tests, but please use the clear gel if possible in the future, it's awesome to see that slow speed footage..

SickAudi: can't wait till they're' back in stock!! 200 grain JHP and the 220 hard nose!!! omggg

EABOY2600: This would make a great self-defense round especially if you have to shoot the a car door or window, it's heavy but very fast it will punch through! 

jeremy beverly: I've been looking to see if you've done a 40 in underwood but I can't find it I want a hot load but Speer gold dot 165 has done me well. If you do have a 40 underwood video can you guide me to it great video and thank you.

KevinJohn556: Looks awesome how ever living in a big city I would say overkill for me unless I was hiking but that's what my ak pistol and hot 357 sig underwood fmj's

Barry Newman: it is a crap shoot but it seems to be whos crap you like better. Massive energy dump.

100REALM: I think the greater "energy dump" would equate to more knock down power versus less energy & more penetration. 

noel hernandez: Anyone ever test Underwoods .223 or. 556??

Jim Nesta: It looks as if Underwood is driving the XTP bullet beyond its design speeds and causing excessive expansion and fragmentation. I would love to see the XTP bullet in a full-power 10mm load with more limited expansion and more penetration. 

vegasbob007: Good video .Thanks .

Jim Nesta: The terminal ballistics of this round look similar to the performance of the .45 acp +p 200 & 230 gr. XTP Hornady loads. Aside from the benefit of greater ammo capacity in the G20 vs a .45 1911, I can't see a compelling improvement in terminal ballistic performance in the 10mm G20 vs the .45 acp +p 1911. The greater kinetic energy of the 10mm here may be producing a larger temporary cavity, but not much more in the way of an effective wounding effect - the permanent cavity. My belief is that we have yet to see an expanding bullet that has been optimized to convert the kinetic energy of the 10mm into more extensive destruction of tissue in the target.

JayzBeerz: I still prefer .45 ACP Federal HST. 

dhamilton201: in response to E.W.E. Hughes Jr. and Bob Cobb I will have to second what Bob says ....You really dont have a clue!!

MarvelousSeven: This is really the only 10mm JHP brand I buy any more.

blackwerk: @ me2ontube imagine that small bullet weighing 706 pounds. now simply lay that small 706 pound bullet on your chest. The weight of that very small but now extremely heavy bullet will penetrate your chest from the weight alone 706 ft/lbs of energy. hope this helps...

ediot6969: I have a glock 20c but I got a kkm 6" barrel and my velocity was 100 fps faster than what Got in this testing which means anything from human to a 1500 lb bear is going down easy. 

Bogs Craig: so, which one is the best hand carry self defence gun?

MrZacfisher: theres no way that bullet would pass through that block, all those jugs of water, and on the other side of that theres trees...

Charles Marshall: To me there is no doubt that I will carry my 18 shot 9mm EAA Witness with Underwood 147 grain loads. Much faster and more controllable follow up shots that any other personal defense load out there. I've learned over the years that a controllable pistol with plenty of ammo is best. 

Jeff Gibson: Thats pretty darn impressive in my opinion. Considering an animals chest cavity contains lungs filled with air, I believe you would get a complete pass through on a deer. Just my thoughts.

tnoutdoors9: Probably 180 gr.

12799MaDeuce: Would make a good winter carry load

savagejo6661: Sorry, that's a Weatherby PA-459......THANKS!!!

RockGIV: Hey TN just thought I should let you know that I bought a box of .40 S&W a couple months ago, but when I recently went to test it out I found that inside the box that was marked .40 S&W +P there was 10mm!! and it didn't even have gold dot bullets in the rounds! I have tried to contact Underwood but they are expieriencing a "high volume of calls" and have gotten back to me yet. No need to say I am now kind of worried about thier Quality Control.

mrwangchung: Underwood loads some good stuff, it's my carry ammo.

Moparking950: Great vid.

E.W.E. Hughes Jr: IMO the 10 MM round seems to be a tweener that doesn't really do any one thing well. The .40 or .357 SIG is more than adequate for self defense, and .44 Magnum seems like it's a better hunting round. 10 MM seem relegated to bear defense.

JONYAG07: the .38 special is also shorter than the .357 Mag yet u can fire a 38 in a revolver chambered for .38 Special... The problem is not firing the bullet into the chamber, but firing a cartridge that is not headspacing (It can't reach the chamber's shoulder)- simply held in place by the extractor.

MagicCat3: Energy Dump (adj.) To expel all of ones energy at once in a single quantified location. Thus having the bullet not leave the body cavity.

Bill Kunert: Have you done gel test using win white box. 40 180gr jhp?

chopinbloc: Sure. Once. I'm kidding, of course. People have done it but it's not a good idea because the cartridge headspaces on the case mouth.

eromusofwom: Huh? Every bullet is designed to kill. A .45 ACP bullet at slower velocities will actually expand to a wider diameter and potentially cause even more damage to vital organs. What do you base this ridiculous opinion on?

GarnetGoldGunner: TN!! Get your hands on some Black Talons!

Hernandez048: What do you guys hunt with a 10mm? Other than things that bump in the night ofcourse.

MrWhitetailtracker: Well a BB could to if it hit you right but let's be realistic Tiggerman323

xtremearmor: Outstanding video. The bullet had very nice expansion and the penetration was spot on too. You brought up some very interesting points about the velocity of this ammo too. Very well done!

fivefoflow: Who said anything about hunting?

David T: I've been watching your videos for a while and I think they're great! I think we'd enjoy seeing a 155 gr all copper barnes loaded in 10mm by buffalo bore. Please throw that bad boy into some sim test.

chopinbloc: No it's not. Not even close. It's roughly equal to .357 mag in terms of energy. 10mm can push the heavier bullets just a little faster than .357 can push the same bullets. 10mm is well short of .41 mag and this rumor needs to die. Anyone with double digit IQ and just barely literate can pick up a reloading manual and see that 10mm is nowhere near .41 mag.

MrWhitetailtracker: This would put a bad guy on the carpet in a hurry.

W. Tinnen: Ha ha ha, and A LOT lighter than a shotgun! I'll look in to that bear spray again then (it has been a couple years since I've checked them out). Yes, the 2 legged threats. You've given me some good ideas--bear spray and a Glock; but something smaller, like a 26. I can leave Mossy at home. Thanks again.

mememojo: can 10mm be called .40s&w magnum

Luis Postgate: To bad the government plans to take all of this away from us

Southern Shooter 86: Federal 9BPLE.....

Oh Kay: Every bullet is designed to kill. However, wound channel size is so similar between the .45 and the 10mm (10mm is a super hot .40SW), that the next factor is power. The 10mm is dumping massive FT-LBS of power into the target. There will be more surrounding tissue damage and collapsed tissue/veins/artery from the pressure than the .45. I love both, I carry either an XDm .45 or a G20SF

Schools: Learn how to get phlebotomy training in California! The job pays decent money for the amount of schools needed to graduate.
Rating:
AMMO TEST: 10mm Underwood 200 gr Hornady XTP JHP 5 out of 5

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