Author Topic: First time with Underwood Ammo  (Read 297 times)

Jason B.

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First time with Underwood Ammo
« on: September 03, 2017, 12:56:09 PM »
Hello everyone! First post and new 10mm addict.

I recently purchased a Gen4 Glock 29 as my EDC carry gun, I normally carry a Gen4 19 but wanted something with more power. After my purchase I wanted to put a few rounds down range so I purchased some overpriced Federal AE ammo and was very happy with the accuracy and the very manageable recoil of the weapon. I started looking into the various 10mm loads only to find out the Federal AE was a rather weak load so naturally I wanted to shoot some "full power" loads.

I purchased some Hornady 180gr XTP ammo with the gun but knowing that a shorter barrel will reduce velocities I started to research an ideal carry load for SD. The 10mm has opened my eyes to the excellent performance of the XTP bullet so I picked up some Underwood Ammo in,

155gr XTP
180gr XTP
200gr XTP
And for fun, 135gr Nosler


I started out with the Hornady Custom 180gr XTP rounds, they had a stout recoil and it might have been my excitement but I was all over the target with these rounds. Although, this lack of accuracy with the 180gr rounds continued with the Underwood ammo too. The fun really came when I loaded up some 135gr Nosler's, first round out gave a huge white flash and thunderous crack and while completely shocked at the power of this round I couldn't help but to giggle like a little girl. I simply couldn't believe the muzzle blast and cannon like sound coming from this little (ish) gun.

Curious of the other rounds I decided to move up in weight to the 155gr XTP loads and again I get a similar result as the Nosler rounds but a little more felt recoil and was the first round to strike exactly where my sights were pointed. The 180gr Underwood XTP's were noticeably hotter than the Factory Hornady loadings but for some reason I was having a hard time making accurate shots with that bullet weight. The 180gr Underwood rounds had about half the muzzle flash as the first two lighter and faster rounds but still had to be moving along as it gave a loud crack that I felt in my chest and ground. Lastly, was the 200gr XTP, these were much more tame and had almost no muzzle flash but still a stout felt recoil thanks to that big chunk of lead going down the tube. The 200gr XTP's shot very well holding a very tight group that was only matched by the 155 XTP's and the 135gr Nosler's.

In conclusion I have decided on the Underwood 155gr XTP as my main carry load. My accuracy shooting this loading was only matched by the 200gr XTP rounds but with my concern of over penetration on two legged aggressors the 155gr rounds take the win. The 200gr rounds are going in the spare mag and will probably be my carry loads for the woods. Overall, I am very impressed by underwood ammo and the Glock 29, makes me want more 10mm guns and gives me a good reason to start hand loading again  ;D


P.S. Big thanks to everyone here and all the helpful information that aided in the above test. Looking forward to more learning and sharing.

Thanks,
Jason

The_Shadow

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Re: First time with Underwood Ammo
« Reply #1 on: September 03, 2017, 02:52:31 PM »
Jason, Welcome to the forum and the world of 10mm and all it has going for it!
The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
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Southeast, LoUiSiAna

Jason B.

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Re: First time with Underwood Ammo
« Reply #2 on: September 04, 2017, 06:38:47 PM »
Thanks,

One thing that I was a bit concerned about was the case bulge I was seeing with all the loadings. Is it normal to have a little case bulge running the looser chamber of the Glock?

The_Shadow

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Re: First time with Underwood Ammo
« Reply #3 on: September 04, 2017, 07:00:19 PM »
Yes the case will swell out to 0.4340" anything larger may show a distinct line which would be called a SMILE.

Normal sized casing are 0.4215" to about 0.4230" so yes those Glock barrels are loose...
The "10mm" I'm Packin', Has The Bullets Wackin', Smakin' & The Slide is Rackin' & Jackin'!
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Blades

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Re: First time with Underwood Ammo
« Reply #4 on: September 06, 2017, 05:17:13 PM »
Welcome and a great choice for a carry gun. I'm wearing my G29sf as I sit here typing. :) We need more "Jason's" around here.
--Jason--

Jason B.

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Re: First time with Underwood Ammo
« Reply #5 on: September 17, 2017, 07:48:20 AM »
Back at the range yesterday with some Sellior & Bellot 180gr ammo and my new Truglo Tritium Pro sights. After the last range report I put Snake Eye's sights on my G29 and liked them at first but after an outdoor shoot I found them to block the sight picture more than they defined it. So, thinking back on my days of competition shooting I wanted a serrated rear and a large bright front sight, I found the Truglo Tritium Pro sights and I decided to give them a try. Very nice and priced right but I needed to see if they were in the proper position and accurate.

I was expecting the S&B loads to be a little lighter after watching some velocity test putting them at just a touch over 1000fps but was kinda surprised these thumped pretty hard out of my G29, some even giving a little muzzle flash. I'm still not the most accurate with the 180gr load but dialed it in after a few mags enough to make sure my sights were true.

Overall, it was good target ammo at a good price and the sights were easy to shoot and fast on target with good sight picture. I would recommend both to anyone.