Underwood 135 Grain .40 (WOW) [Archive] - Glock Talk

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9mmdude
08-27-2012, 13:16
I took my new Glock 35Gen4 to the range today. I vowed to never buy a .40 again; that didn't last long.

The Underwood 135 Grain .40 ran like a champ. The 50 round box ran flawlessly. The primers looked good and the brass looked normal. The round was hot for sure, I wish I had a chrono. I also ran some Lawmen 165 grain FMJ and Blazer 180 grain. The glock 35 ate them all but I gotta say the Underwood stuff was FUN!!!

cowboy1964
08-27-2012, 13:56
Probably 1550-1600 fps. Insane.

glock20c10mm
08-27-2012, 14:42
Probably 1550-1600 fps. Insane.

I don't know. 1550-1600 would be more like the 10mm load. Though he is rating the 40 load for 1500. Makes me think he's holding back on the 10mm load.:)

cowboy1964
08-27-2012, 17:03
Well there is a comment on the product's web page where someone said they chrono'ed it from a G23 at around 1525-50 so the G35 should be even higher.

That has got to be hard on the gun, regardless of make.

glock20c10mm
08-27-2012, 17:39
Wow. Now I think we're being jipped even more on the Underwood 10mm 135gr load than I started out. That is a pretty amazing load in 40!

RYT 2BER
08-27-2012, 17:57
I vowed to never buy a .40 again



With all due respect...that is a very dumb vow :supergrin:

jbglock
08-27-2012, 18:40
Someone please PM me if any mention of it being tested for pressure with real numbers so it is known as safe. Otherwise I'm not going to bother with the inevitable arguments again.

glock20c10mm
08-27-2012, 18:57
Someone please PM me if any mention of it being tested for pressure with real numbers so it is known as safe. Otherwise I'm not going to bother with the inevitable arguments again.
You could email Underwood and see what he says. Matter of fact I'ld be curious to know too.

9mmdude
08-27-2012, 20:59
With all due respect...that is a very dumb vow :supergrin:

Now I want a Gen4 23 again. :wow:

Rock Hound
08-28-2012, 01:10
Someone please PM me if any mention of it being tested for pressure with real numbers so it is known as safe. Otherwise I'm not going to bother with the inevitable arguments again.
Sounds wreckless...:wow:

Glockbuster
08-28-2012, 07:56
Not something I would carry or care to shoot, sorry.

brisk21
08-28-2012, 08:10
Yeah, I got rid of my .40 awhile ago. I missed having a .40 so I went and got a Gen4 22. I still prefer a .45, but I like the .40 to.

JW1178
08-28-2012, 09:23
I wonder how effective that round would be as a SD round. Sounds like it wouldn't be a very deep wound but would be quite nasty. I shot that same bullet loaded by DT in the 10mm into waterjugs. Found the core in the third jug but the first jug was almost ripped in two and the second was also torn apart really bad with several holes from the shrapnel. Seeing a test into a block of meat they leave some nasty holes.

FFR Spyder GT
08-28-2012, 16:48
As a reloaded and an owner of a Gen2 G20 10mm, a Gen3 G23 and G35 I find the +1,500ft/sec out of a G23 totally unbelievable.

It's hard enough to get them to 1,600ft/sec in a stock lenght G20 barrel much less the shorter G23 barrel.

I friend of mine has several G24's and has tried repeatedly get the 135's to 1600ft/sec and had failed every time.

I know for a fact that DT ammo doesn't reach it's advertised velocity out of a stock lenght G20 barrel. Barely reaches it out of the 6" hunting barrel.

shotgunred
08-28-2012, 17:17
Even with 11.5 gr max load of longshot you only get 1434 fps and 31,900 PSI out of a 40 sw test barrel. There is no way you are going to get that velocity out of a G23 without blowing it up. You certainly are not going to buy over the counter ammo with over 32 K psi sami max pressure.

SDGlock23
08-28-2012, 19:39
I've used 800x and 135gr Nosler. Average from 4.02" Glock 23: 1550+ fps. It's doable, I've done it. 1700+ from 6" bbl. FWIW IMR shows their 135gr load only at 24K PSI...40 S&W is rated for 35K.

Too bad 800x kinda sucks to load with. I wish I knew what Underwoods used. VV 3n38 may do 1500+ from G23 (135gr) since it's got me near 1400 with a 155gr.

Glockbuster
08-28-2012, 22:22
I've used 800x and 135gr Nosler. Average from 4.02" Glock 23: 1550+ fps. It's doable, I've done it. 1700+ from 6" bbl. FWIW IMR shows their 135gr load only at 24K PSI...40 S&W is rated for 35K.

Too bad 800x kinda sucks to load with. I wish I knew what Underwoods used. VV 3n38 may do 1500+ from G23 (135gr) since it's got me near 1400 with a 155gr.

First I hear of those velocities in that caliber/weights.

From the Lapua reloading guide, using 3N37 or N350 will give you 1367 fps max at their max loading with the 135 gr. nosler bullet, using a 5.5" barrel, sure to be much less out of a G23.

3N38 burns slower than 3N37 or N350 so out of the smaller barrels its a non starter.

I am a non believer for anything over 1400 fps with 135 grain bullets in .40 cal and G23.

FFR Spyder GT
08-29-2012, 17:20
First I hear of those velocities in that caliber/weights.

From the Lapua reloading guide, using 3N37 or N350 will give you 1367 fps max at their max loading with the 135 gr. nosler bullet, using a 5.5" barrel, sure to be much less out of a G23.

3N38 burns slower than 3N37 or N350 so out of the smaller barrels its a non starter.

I am a non believer for anything over 1400 fps with 135 grain bullets in .40 cal and G23.

+20,000,000,000,000,000

SDGlock23,

Gee, let me think for a sec..........



http://i222.photobucket.com/albums/dd248/stengun/1343314632.png

Spyder

KoalKing
08-30-2012, 15:45
Have these Underwood numbers been verified? I have DT ammo in 135 grain which runs 1375 fps. It certainly makes the G27 snappy! One thing about DT is they load the Nosler bullet which is not my favorite.

ABNAK
08-30-2012, 18:23
One thing about DT is they load the Nosler bullet which is not my favorite.

Funny you mention that. I have some DT 357Sig. No trouble with the velocity (1452fps average but with a 154fps ES). However, they advertise that they load 125gr Sierras but they sure look like Noslers.

SDGlock23
08-30-2012, 20:23
First I hear of those velocities in that caliber/weights.

From the Lapua reloading guide, using 3N37 or N350 will give you 1367 fps max at their max loading with the 135 gr. nosler bullet, using a 5.5" barrel, sure to be much less out of a G23.

3N38 burns slower than 3N37 or N350 so out of the smaller barrels its a non starter.

I am a non believer for anything over 1400 fps with 135 grain bullets in .40 cal and G23.

3n38 does amazingly well, and had I not loaded these up and chronographed them I would not have posted such. The Lapua guide I got my info from shows 3n38 delivering over 1300fps (165gr), but barrel length I don't recall. 10.2grs was the charge weight however. I have not tried 3n38 with 135gr, only 155gr and 165gr.

It's kind of pointless to drive any 135gr .40 bullet even to 1300 fps as they fragment terribly. However even a quick look at Longshot data shows, errr claims, over 1450fps with a 135gr. I've not tried that myself, but did get beyond that using 800-x quite accidentally. Book data only showed one listed charge and it was a fair bit faster than what was claimed, IMR later pulled the data. Brass didn't look bad but velocity spreads were erratic, something I've found loading both .40 and 10mm.

Glockbuster
08-31-2012, 07:03
3n38 does amazingly well, and had I not loaded these up and chronographed them I would not have posted such. The Lapua guide I got my info from shows 3n38 delivering over 1300fps (165gr), but barrel length I don't recall. 10.2grs was the charge weight however. I have not tried 3n38 with 135gr, only 155gr and 165gr.



OK, according to my guide, that 10.2 gr load is above the max., they only show 9.8 grains max load with 3N38 at 1252 fps and 5.5" barrel. I know manufacturers change their data from time to time and your guide might be different.

But essentially to me such a wide spread in velocities is a definite sign to either use a different powder or stay away from that high a load which is producing those velocities. Like you mentioned on the last part of your post, it is pointless to drive bullets above certain velocities.

G33Man
08-31-2012, 07:54
I am tired of paying almost a $1 a round for stuff that chrono's well under it's advertised FPS more often than not. (This includes Double Tap and Corbon. Buffalo Bore chrono'd well but they still haven't been able to obtain Speer Gold Dot bullet and are using something like Montana Gold JHP bullets which separate big time when shooting full power 10mm loads).

In the meantime, I have found Underwood to be an excellent source for full power 10mm ammo.

I have shot 150 rounds of Underwood ammo (http://www.underwoodammo.com/10mmauto.aspx). It was 180gr and 200gr in FMJ and JHP (using Hornady XTP bullets). I was using my Glock G20SF with a 22# Wolff recoil spring. Great results and the G20SF functioned flawlessly. The chrono#s were very supportive of their FPS claims...even thru my factory barrel.

I have another 4 boxes of 50 in route. The cost is $28-$30 a box. Shipping was $13.41. The last batch of Double Tap chrono'd under their claims in most cases and cost $45-$50 for a box of 50. I am sold on Underwood ammo.

Some chrono info below:

Defensive carry 10mm (http://www.defensivecarry.com/forum/defensive-ammunition-ballistics/140978-underwood-ammo-best.html)

9mmdude
08-31-2012, 08:33
I am tired of paying almost a $1 a round for stuff that chrono's well under it's advertised FPS more often than not. (This includes Double Tap and Corbon. Buffalo Bore chrono'd well but they still haven't been able to obtain Speer Gold Dot bullet and are using something like Montana Gold JHP bullets which separate big time when shooting full power 10mm loads).

In the meantime, I have found Underwood to be an excellent source for full power 10mm ammo.

I have shot 150 rounds of Underwood ammo (http://www.underwoodammo.com/10mmauto.aspx). It was 180gr and 200gr in FMJ and JHP (using Hornady XTP bullets). I was using my Glock G20SF with a 22# Wolff recoil spring. Great results and the G20SF functioned flawlessly. The chrono#s were very supportive of their FPS claims...even thru my factory barrel.

I have another 4 boxes of 50 in route. The cost is $28-$30 a box. Shipping was $13.41. The last batch of Double Tap chrono'd under their claims in most cases and cost $45-$50 for a box of 50. I am sold on Underwood ammo.

Some chrono info below:

Defensive carry 10mm (http://www.defensivecarry.com/forum/defensive-ammunition-ballistics/140978-underwood-ammo-best.html)


Agree 100% +1