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180gr Underwood 10MM #208481 10/12/2020 2:41 PM
Joined: May 2012
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reflex264 Offline OP
Gun Slinger
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I handload 95% of my hunting ammo but I am going to try a few things this year. I got some Underwood 10MM 180gr ammo loaded with the Gold Dot. Advertised velocity is 1300. It clocked 1259fps from my G20 with 4.61" barrel so fairly close. It looks like it is going to be plenty accurate so it is probably going to the woods.


"A quiet hit in the right place is better than a loud miss in the wrong place followed by 10 more shots on the run"

I was a handgun hunter, when handgun wasn't cool.....
Re: 180gr Underwood 10MM [Re: reflex264] #208482 10/12/2020 4:09 PM
Joined: Nov 2008
Posts: 378
dave thomas Offline
enthusiast
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should kill anything you shoot within reason, good luck and let us know how it performs


Ephesians 6:10-18 because we are warriors.
Re: 180gr Underwood 10MM [Re: dave thomas] #208507 10/13/2020 5:57 PM
Joined: Nov 2008
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jcp161 Offline
enthusiast
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I just bought some to try myself. Makes the 10mm a real 10mm. I bought the XTPs and the bonded JHP in 180 grain. I see they are both sold out on their site.

Mine will be coming out of a Glock 40. I don't have a chrono but the accuracy was good with both rounds.

John

Re: 180gr Underwood 10MM [Re: jcp161] #208521 10/14/2020 1:35 AM
Joined: Apr 2009
Posts: 3,625
Raptortrapper Offline
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Posts: 3,625
Nice to see some other 10mm guys. I love mine. Wish I had found it sooner, but I purposefully waited on Springfield to release their version. I knew it would be worth waiting for, and boy was it!!! I had the TRP in 45 a few years back, but I REALLY like it in the 10mm. Hopefully get something with it in a few weeks.

I haven't shot factory ammo in years. Gotten to the point where if I can't reload it myself, I don't need it. Reloading is half the fun for me. Trying to get the lowest SD is a hobby in itself.


A lot of people are like a slinky: Not much fun till you push them down the stairs!

Lifetime Member of the NRA! Wish I'd a done it sooner.
Re: 180gr Underwood 10MM [Re: Raptortrapper] #208524 10/14/2020 2:17 AM
Joined: Feb 2008
Posts: 2,434
H2OBUG Offline
Pooh-Bah
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Pooh-Bah
Joined: Feb 2008
Posts: 2,434
 Originally Posted By: Raptortrapper
Nice to see some other 10mm guys. I love mine. Wish I had found it sooner, but I purposefully waited on Springfield to release their version. I knew it would be worth waiting for, and boy was it!!! I had the TRP in 45 a few years back, but I REALLY like it in the 10mm. Hopefully get something with it in a few weeks.

I haven't shot factory ammo in years. Gotten to the point where if I can't reload it myself, I don't need it. Reloading is half the fun for me. Trying to get the lowest SD is a hobby in itself.


What is your best handload for the TRP
You may save me some time.


If it jams force it! If it breaks it needed replacing anyway.
Re: 180gr Underwood 10MM [Re: H2OBUG] #208525 10/14/2020 3:30 AM
Joined: Apr 2009
Posts: 3,625
Raptortrapper Offline
Shooting Master
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I have only used the 220g FNFB hardcast from Rimrock, and the 200g XTP from Hornady. The 220 hardcast was accurate. The 200g XTP load is STUPID accurate. I would most certainly hunt with either load out to 50 yards.

The 220 hardcast was shot with 7.4g of Longshot and had a velocity of 1179 and a SD of 10.

The XTP's were capped over 7.9g of Longshot with a SD of 8. That load is pretty hot though, and was at the very top end for my gun. Also took out the 18# recoil spring and put in a 23# spring. Ran a 26# spring for a bit, but it wasn't working well. The 23# spring is the sweet spot for me. Works well with either of the loads mentioned above.

This reminds me of the last time I used stock ammo instead of reloads! I ran stock ammo from sig in this gun with the 26# recoil spring to test it out, and it stove piped a few times. Worked great with my heavy loads, but was to much for the factory stuff. But the same sig stuff ran flawless with the #23 spring.


A lot of people are like a slinky: Not much fun till you push them down the stairs!

Lifetime Member of the NRA! Wish I'd a done it sooner.
Re: 180gr Underwood 10MM [Re: Raptortrapper] #208530 10/14/2020 1:11 PM
Joined: Feb 2008
Posts: 2,434
H2OBUG Offline
Pooh-Bah
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I am currently running a 180 Winchester HP over a 8ish charge of BE-86. Shoots good and functions fine.

I find this BE-86 to be a bit hotter than the book says. At least for me.
I loaded some 9MM stuff with it and it was very stiff and I was 10% off max.

Same for the 10MM


If it jams force it! If it breaks it needed replacing anyway.
Re: 180gr Underwood 10MM [Re: H2OBUG] #208560 10/16/2020 1:05 AM
Joined: Dec 2012
Posts: 465
WiseGuy Offline
addict
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Posts: 465
Has anyone tried the new Swift Aframes in 10mm yet?


Bigger ain't always better....according to who???
Re: 180gr Underwood 10MM [Re: WiseGuy] #208601 10/19/2020 2:35 AM
Joined: Sep 2007
Posts: 82
jajwrigh Offline
journeyman
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Joined: Sep 2007
Posts: 82
I love my 10mms! Awesome round and Underwood makes great ammo for sure.


One shot, one kill.

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