Has Underwood fixed the 357Sig velocity issue? [Archive] - Glock Talk

PDA

View Full Version : Has Underwood fixed the 357Sig velocity issue?


ABNAK
09-30-2012, 17:58
?????????

Read a while back on here where someone chrono'd the 125gr GD load from Underwood and it was waaayyy short of the 1450fps advertised (like low 1300's IIRC).

Maybe Underwood can chime in? If it has been rectified, how do we know we aren't going to get old substandard (velocity-wise) stock left over?

SCmasterblaster
10-01-2012, 09:57
I guess that their quality control are the users with chronographs!!

Berto
10-01-2012, 11:08
100fps wouldn't freak me out too much, given the range of temperatures, guns (chamber/bore variances) and other factors. I've seen the stuff deliver, exceed and sometimes fall short, just like other brands.

ABNAK
10-01-2012, 11:47
100fps wouldn't freak me out too much, given the range of temperatures, guns (chamber/bore variances) and other factors. I've seen the stuff deliver, exceed and sometimes fall short, just like other brands.

I see ~ 100fps as quite a variance, especially when they are achieving it with other calibers like 9mm, and 357Sig is all about velocity.

YMMV.

SCmasterblaster
10-01-2012, 12:50
100fps wouldn't freak me out too much, given the range of temperatures, guns (chamber/bore variances) and other factors. I've seen the stuff deliver, exceed and sometimes fall short, just like other brands.

You are probably right. :cool:

cowboywannabe
10-01-2012, 12:59
what gun did they use?

SCmasterblaster
10-01-2012, 13:38
I don't know. But if it were some kind of short-barrelled hideaway pistol, that would account for the low velocity.

ABNAK
10-01-2012, 18:20
They were out of the office until tomorrow when I tried to call earlier. FWIW the 357Sig 125gr was listed as "Out of Stock", so maybe they pulled them or are rebooting for the next batch? :dunno:

avenues165
10-01-2012, 19:24
I've seen a few examples of it chrono'ing at low 1,300s to about 1,380fps from 4" barrels.

Heck, they are getting 1,300fps from their 124gr 9mm +p+ loads in 4" barrels. There has to be an issue with it.

I did read that Underwood used a G31 for their 357 sig testing.

kjunderwood
10-01-2012, 21:18
Yes, they were coming up short. That has been addressed, along with an increase in velocity to 1475FPS out of a 4" barrel. For a couple weeks they've been manufactured this way with more on schedule for production late this week.

avenues165
10-01-2012, 21:56
Sweet, that's what I'm talking about!

SCmasterblaster
10-02-2012, 10:43
Yes, they were coming up short. That has been addressed, along with an increase in velocity to 1475FPS out of a 4" barrel. For a couple weeks they've been manufactured this way with more on schedule for production late this week.

is good news. :cool:

Beware Owner
10-02-2012, 10:46
I do still wonder why the Sig is loaded so lightly to where the 9mm is almost the same in velocity.

ABNAK
10-02-2012, 11:08
Yes, they were coming up short. That has been addressed, along with an increase in velocity to 1475FPS out of a 4" barrel. For a couple weeks they've been manufactured this way with more on schedule for production late this week.

Outstanding! Thanks for replying.

SCmasterblaster
10-02-2012, 16:18
I do still wonder why the Sig is loaded so lightly to where the 9mm is almost the same in velocity.

It sounds like a simple mistake at the factory. :shocked:

avenues165
10-02-2012, 21:42
At 1,475fps out of a 4" barrel the new loading is 175fps faster than the 9mm 124gr +p+ loading. Out of my G24 with a 6" barrel that load will be smokin':smoking:

SCmasterblaster
10-03-2012, 11:28
At 1,475fps out of a 4" barrel the new loading is 175fps faster than the 9mm 124gr +p+ loading. Out of my G24 with a 6" barrel that load will be smokin':smoking:

Probably 1600 FPS!!!!!!!!

Beware Owner
10-03-2012, 11:56
It sounds like a simple mistake at the factory. :shocked:

I think that if they paid the same amount of attention to the Sig as they do the 9, as far as developing the load, we'd see a significant difference, as we should.

avenues165
10-03-2012, 20:24
Probably 1600 FPS!!!!!!!!

I'd like to see TNOutdoors9 test this load out of a 4" barrel. I think (not sure) that 1,475fps is at or slightly exceeding the upper velocity limit of the GD.

For my G24 I have loaded it up with 125gr GDs (1,350fps variety). I think at ~1,600fps that thing will start to break up. I could be wrong.

SCmasterblaster
10-04-2012, 10:12
I'd like to see TNOutdoors9 test this load out of a 4" barrel. I think (not sure) that 1,475fps is at or slightly exceeding the upper velocity limit of the GD.

For my G24 I have loaded it up with 125gr GDs (1,350fps variety). I think at ~1,600fps that thing will start to break up. I could be wrong.

I wonder how your loads would work in a G17?

avenues165
10-08-2012, 15:52
I wonder how your loads would work in a G17?

The GD 5 petal 125gr 357 sig loading should be fine in a 4.5" barrel. I would guess that the velocity gain wouldn't be too much to cause it to break up.

ABNAK
10-08-2012, 19:10
I have two boxes of the "improved" Underwood 357Sig on the way. Should be here Wednesday. :supergrin:

avenues165
10-08-2012, 20:49
I have two boxes of the "improved" Underwood 357Sig on the way. Should be here Wednesday. :supergrin:

Awesome, let us know what you find. My local cheap option for 357 sig has dried up, so I will be ordering from UW soon. For the FMJ I will happily take any velocity at or above 1,350fps. At or below ~1,300fps I have noticed less than ideal ejection. Not BTF, just a little weaker than I like.

Beware Owner
10-09-2012, 07:56
I have two boxes of the "improved" Underwood 357Sig on the way. Should be here Wednesday. :supergrin:

Let me know it works.

SCmasterblaster
10-09-2012, 08:12
I'd like to see TNOutdoors9 test this load out of a 4" barrel. I think (not sure) that 1,475fps is at or slightly exceeding the upper velocity limit of the GD.

For my G24 I have loaded it up with 125gr GDs (1,350fps variety). I think at ~1,600fps that thing will start to break up. I could be wrong.

You are likely correct about the bullet fracturing at 1600 FPS:cool:

Beware Owner
10-09-2012, 08:13
You are likely correct about the bullet fracturing at 1600 FPS:cool:

I'd like to see factory Sigs at or near that velocity...

SCmasterblaster
10-09-2012, 08:32
I'd like to see factory Sigs at or near that velocity...

You wouldn't have to be too concerned about bullet expansion!

Beware Owner
10-09-2012, 09:09
You wouldn't have to be too concerned about bullet expansion!

I'd like to know how they chrono in 4" bbls and if the "lightning" effect they have on people would be stronger.

SCmasterblaster
10-09-2012, 10:46
I'd like to know how they chrono in 4" bbls and if the "lightning" effect they have on people would be stronger.

Even make a .357 Sig with a 4-inch barrel? :dunno:

Beware Owner
10-09-2012, 11:04
even make a .357 sig with a 4-inch barrel? :dunno:

g32...

SCmasterblaster
10-09-2012, 18:10
g32...

I forgot - thanks. :cool:

TWS G26
10-11-2012, 12:02
I'd like to see TNOutdoors9 test this load out of a 4" barrel. I think (not sure) that 1,475fps is at or slightly exceeding the upper velocity limit of the GD.

For my G24 I have loaded it up with 125gr GDs (1,350fps variety). I think at ~1,600fps that thing will start to break up. I could be wrong.


Working on it. I have two boxes of the recalibrated product in the house. I have yet to throw it at the clock, but just shooting a few rounds mixed in with some of the Speer factory load indicates quite a noticable difference.

SCmasterblaster
10-11-2012, 12:15
Will the G40 be in .40 S&W?

ABNAK
10-11-2012, 14:32
Working on it. I have two boxes of the recalibrated product in the house. I have yet to throw it at the clock, but just shooting a few rounds mixed in with some of the Speer factory load indicates quite a noticable difference.


Oh yeah! You da man!

avenues165
10-11-2012, 19:32
Oh yeah! You da man!

I 2nd that, great tests!

SCmasterblaster
10-12-2012, 14:00
No, the Glock 40 will be something else.

meatloaf samwich
10-21-2012, 20:09
I cut a 5" group of federal 357sig 125gr @ 10 yards to 2" sith the same load from underwood. I screwed up an order and Kevin fixed it without any penalty to me. Fantastic CS and an all around nice guy. huge fan of his ammo. Have both 9mm and 357sig from underwood and no ftf, fte, bulging, or smileys.

SCmasterblaster
10-22-2012, 10:12
I cut a 5" group of federal 357sig 125gr @ 10 yards to 2" sith the same load from underwood. I screwed up an order and Kevin fixed it without any penalty to me. Fantastic CS and an all around nice guy. huge fan of his ammo. Have both 9mm and 357sig from underwood and no ftf, fte, bulging, or smileys.

I'd carry Underwood ammo after I run out of 9mm 115gr JHP +p+.

Ljutic
10-22-2012, 20:06
I got 1397 5 shot average with my G27 with Lone Wolf .357 Sig conversion barrel last weekend. I'd say they fixed the velocity problem. 542 ft/lbs is quite a bit for a pocket pistol. :supergrin:

SCmasterblaster
10-23-2012, 10:55
I got 1397 5 shot average with my G27 with Lone Wolf .357 Sig conversion barrel last weekend. I'd say they fixed the velocity problem. 542 ft/lbs is quite a bit for a pocket pistol. :supergrin:

Indeed. 500+ FPE from an autoloading handgun is a lot! :cool: