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Old 01-11-2013, 15:28   #901
T-Rod45
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Quote:
Originally Posted by Tiro Fijo View Post
Go to 2:40 in the following vid:

Glock Gen4 vs Gen3 Part 2 - YouTube


Thanks for the vid. It confirms my theory that the shelf difference is for seating the new RSA, however as people have posted on other forums, this position is null after the pistol is assembled... Which would explain why everyone who has posted that they are using a Gen3 barrel in a Gen4 gun has had 100% reliability.

I will have to put that theory to fact myself next weekend, as I have just won an auction on a Gen3 G32 barrel for my Gen4 G23. I will be running the 200 rounds I have of WWB .357sig to ensure it works. Results will be posted here. Hope I don't break a wrist...
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Old 01-11-2013, 15:36   #902
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Quote:
Originally Posted by Tiro Fijo View Post
Go to 2:40 in the following vid:
Considering the source (YouTube) I would argue on that basis alone. Glock Factory Armorers cringe at the mere mention of YouTube. BUT, in the video, the shelves do look different between the 34 Gen3 and 17 Gen4. I would also say that he was comparing a 17 to a 34 barrel - but those should be exactly the same in that area anyway.

I have a Gen3 17, a Gen3 34, and a Gen4 17 whose barrels look to the naked eye exactly the same at the shelves. This prompted me to get out the calipers. On all my barrels the measurement(s) where I was best able to take them - top of shelf of the half moon cutout to the locking-notch/barrel hood corner on the barrel(s) all measure the same - .6665".

The Gen3s are both ODs with test fire dates of:
G17 - 08/30/10
G34 - 10/06/10

The Gen4 G17 is 06/21/12

In addition, and as noted above in my post # 894, for current ordering purposes, the Glock Armorer's parts list (also known as "Will-Fit Info") shows no difference between any generation barrels except as also noted above in that post #894.

We know that Glock does make product improvements and have (for instance) increased the support in .40cal chambers over the years.

That's as scientific and as rational as I can make it, but I have not called Glock.
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Old 01-11-2013, 17:51   #903
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Judging from my research and all the accounts/personal data of other's, I've pretty much narrowed the Gen3 vs Gen4 barrel debate/mystery down to two points:


1) The Gen3 and Gen4 barrels are different.



2) It doesn't matter.
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Old 01-11-2013, 18:03   #904
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Quote:
Originally Posted by T-Rod45 View Post
Judging from my research and all the accounts/personal data of other's, I've pretty much narrowed the Gen3 vs Gen4 barrel debate/mystery down to two points:


1) The Gen3 and Gen4 barrels are different.



2) It doesn't matter.
Sounds like that is probably right.
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Old 01-13-2013, 17:52   #905
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Well, it is sure nice to see a lot more folks coming to terms with the 357 sig. I transitioned to this caliber in a G31 back in 2001 and have loved it ever since. I particularly liked the posts made by GT member English, as usual in this topic and I am also a believer in Dr. Courtney´s work. Some of you should head more over toward the 357 sig. forum.

stay safe all.
You must really like the .357 SIG.
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Old 01-14-2013, 08:55   #906
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You must really like the .357 SIG.
As a matter of fact I do SC, not to discredit the other popular calibers, I respect you all, and recognize the breach between them is small. But there is something enormously satisfying for me when I shoot my 357 sig. Oddly enough, I shoot more .40 than anything else, but can handle 357 sig just as good. In terminal ballistics, I give it an edge over the others.
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Old 01-14-2013, 09:12   #907
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As a matter of fact I do SC, not to discredit the other popular calibers, I respect you all, and recognize the breach between them is small. But there is something enormously satisfying for me when I shoot my 357 sig. Oddly enough, I shoot more .40 than anything else, but can handle 357 sig just as good. In terminal ballistics, I give it an edge over the others.
Is the .357Sig muzzle blast too bright at night?

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Old 01-14-2013, 10:03   #908
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Is the .357Sig muzzle blast too bright at night?

SCMB
Yes it is, and loud too, but not to where it will make a huge difference. I use XS sights and crimson trace on my G32 and G31. I do most of my night work at no more than 7 yards, maybe that´s too short a distance for some I don´t know. Come to think of it, I have a night session coming up on Friday
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Old 01-14-2013, 10:07   #909
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Yes it is, and loud too, but not to where it will make a huge difference. I use XS sights and crimson trace on my G32 and G31. I do most of my night work at no more than 7 yards, maybe that´s too short a distance for some I don´t know. Come to think of it, I have a night session coming up on Friday
Best of luck at your night session.
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Old 01-14-2013, 20:18   #910
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TRIFECTA !!!!!!!!!!!!!

Caliber Corner

Finally got my G32 barrel! The Gen4 RSA fits in the Gen3 barrel cut out perfectly. Racked it about 30 times and chambered a few rounds of .357sig, and so far it seems to functon just fine. Can't wait to get to the range and put it thru its paces.

3-guns-in-1, baby........

Caliber Corner
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Old 01-14-2013, 20:37   #911
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Is the .357Sig muzzle blast too bright at night?

SCMB
Low flash powders can really help to cut down on muzzle flash. If I would shoot my outside range handloads (power pistol) at night I would probably go blind. PP is a very flashy powder in many calibers.

Jefferybehr here on GT posted some testing he did with powders at night with the .357sig but I can't find it. Some produced very little muzzle flash.
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Old 01-14-2013, 22:01   #912
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Originally Posted by T-Rod45 View Post
TRIFECTA !!!!!!!!!!!!!

Caliber Corner

Finally got my G32 barrel! The Gen4 RSA fits in the Gen3 barrel cut out perfectly. Racked it about 30 times and chambered a few rounds of .357sig, and so far it seems to functon just fine. Can't wait to get to the range and put it thru its paces.

3-guns-in-1, baby........
Nice setup. I need to get a 4th gen G-32 RSA for my 3rd gen G-32 and compare it with the Wolff recoil system I have.

Quote:
Caliber Corner
Do you happen to know what the spring weight is on the gen 4 RSA assembly? I've grown quite fond of the #20 Wolff spring's characteristics.
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Old 01-15-2013, 19:30   #913
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Originally Posted by unit1069 View Post
Nice setup. I need to get a 4th gen G-32 RSA for my 3rd gen G-32 and compare it with the Wolff recoil system I have.



Do you happen to know what the spring weight is on the gen 4 RSA assembly? I've grown quite fond of the #20 Wolff spring's characteristics.
Thanks! I have no idea on the spring weight but it's gotta be on the web somewhere...
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Old 01-15-2013, 19:35   #914
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Oh I forgot to mention! I have 150 rounds of Underwood Ammo coming in tomorrow!! I'll be heading to the range Saturday to do a function test with the gen3 barrel in my gen4 G23... 150 rounds of WWB then 50-100 of Underwood.

If it runs, and I like the shootability, then I'll be carrying with Underwood in the .357 configuration. 1,500fps baby! Stay tuned...
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Old 01-16-2013, 02:51   #915
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I've grown quite fond of the #20 Wolff spring's characteristics.


I bought one of those 20 lb springs and I like it. Shooting full power 357 sig loads from my Glock 32 with the stock spring seemed to SLAM back the slide on recoil. esp the new underwood 125 gold dot 1500 fps loads.
This puts excessive wear on a gun. the 20 lb spring cures that.


I only put maybe dozen rounds trough it with stock spring. You can tell a difference when you pull slide back.
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Old 01-17-2013, 01:27   #916
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I bought one of those 20 lb springs and I like it. Shooting full power 357 sig loads from my Glock 32 with the stock spring seemed to SLAM back the slide on recoil. esp the new underwood 125 gold dot 1500 fps loads.
This puts excessive wear on a gun. the 20 lb spring cures that.


I only put maybe dozen rounds trough it with stock spring. You can tell a difference when you pull slide back.
I haven't shot any hyped .357sig ammo except for some 2007-version of Double Tap that may or may not live up to stated velocity figures, but I do know that every range and premium JHP ammo I've shot after installing the Wolff #20 RSA system is much more manageable than with the stock Glock RSA assembly. I understand that Underwood's published figures are the real deal so if you've moderated the recoil with the #20 spring then we've got another testimonial for the heavier assembly.

It just hasn't made any sense to me why Glock uses a standard 18# spring for 9mm, .40S&W, and .357sig. Instinctively I feel that .40S&W and .357sig should have a heavier spring load than 18# as standard issue.
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Old 01-17-2013, 09:32   #917
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I haven't shot any hyped .357sig ammo except for some 2007-version of Double Tap that may or may not live up to stated velocity figures, but I do know that every range and premium JHP ammo I've shot after installing the Wolff #20 RSA system is much more manageable than with the stock Glock RSA assembly. I understand that Underwood's published figures are the real deal so if you've moderated the recoil with the #20 spring then we've got another testimonial for the heavier assembly.

It just hasn't made any sense to me why Glock uses a standard 18# spring for 9mm, .40S&W, and .357sig. Instinctively I feel that .40S&W and .357sig should have a heavier spring load than 18# as standard issue.
And a spring change in a Glock is a simple maneuver . . . .
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Old 01-17-2013, 13:25   #918
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I don't even know if they make heavier springs for the Gen4...
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Old 01-17-2013, 13:37   #919
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And a spring change in a Glock is a simple maneuver . . . .
Yes it is with the Wolff system but I never found a stock Glock RSA assembly that offered heavier springs. I tried putting a flat wound 20# ISMI spring on a Glock guide rod but it was very difficult mechanically and because I had to dissemble the part to remove the Glock spring I never did trust it. I'm confident it will work, just not comfortable with taking apart the stock Glock RSA to put an aftermarket part on a Glock guide rod.
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Old 01-19-2013, 14:51   #920
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Sorry I don't have a glock 357 sig but I have a neat one.

This is a Sig 229 SC sports Combo. has two barrels. A 357 Sig with compensator and target back sight plus a 40 cal slide and barrel. The letter is authentication that the serial number is a SIG Sauer P229 Sports Combo. It was maunfactured in December of 2001.

Caliber Corner



edit if this type thing interests you it is stamped made in Germany
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Old 01-19-2013, 15:01   #921
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It has been in my safe unfired till today. I shot 8 rounds of Underwood 357 Sig 125 gr HP to set the sights.

This evening I'll be in Cool, Texas waiting for my sized pig (~100#).

The pistol is very nice. Trigger, accuracy, reocil very nice. Compensator weight and deflection made recovery quick.

The underwood 357 sig 125 gr hp is bonded. I recovered a bullet shot thru gallon jugs of a slurry of strips of news paper and water. bullet worked great. More in this and pics after I get back. BTW I have a 357 mag 125 gr bullet shot into this type slurry. they look about the same. (shot from a 4" s&w SSR)
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Old 01-19-2013, 16:31   #922
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It has been in my safe unfired till today. I shot 8 rounds of Underwood 357 Sig 125 gr HP to set the sights.

This evening I'll be in Cool, Texas waiting for my sized pig (~100#).

The pistol is very nice. Trigger, accuracy, reocil very nice. Compensator weight and deflection made recovery quick.

The underwood 357 sig 125 gr hp is bonded. I recovered a bullet shot thru gallon jugs of a slurry of strips of news paper and water. bullet worked great. More in this and pics after I get back. BTW I have a 357 mag 125 gr bullet shot into this type slurry. they look about the same. (shot from a 4" s&w SSR)
Congrats on a great pistol, and hope you bag that pig tonight. The only time I went hog hunting (No. Arkansas) I sat for an hour and a half in freezing October weather without as much as a twitch in the grass. The moonshine was good though.)

I understand that Underwood uses the Speer Gold Dot six-petal .357sig Gold Dot bullet. How many jugs did that bullet penetrate in your tests?

The one and only water jug test I conducted included BVAC downloaded (1300 fps) .357sig Gold Dots that penetrated three jugs and mushroomed perfectly so I'm not surprised you had good results. Good components translate into good ammo if all else is done right.
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Old 01-19-2013, 17:57   #923
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It just hasn't made any sense to me why Glock uses a standard 18# spring for 9mm, .40S&W, and .357sig. Instinctively I feel that .40S&W and .357sig should have a heavier spring load than 18# as standard issue.
The large frame glocks 45 and 10mm use the same stock recoil spring and its about the same spring weight as the 9,40 and 357sig. Slide weight and momentum probably decide the weight of a recoil spring. Returning the slide to battery is its main purpose. I've used a heavy recoil spring(23#) in a g30 shooting 400 corbon. It was more reliable with the stock spring and put a lot more wear on the slide lock with the heavy spring.
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Old 01-20-2013, 16:44   #924
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pistol shooting is a game of billards. Shot angles are half the game and the target positions is everthing else assuming you can hit the spot. I did hit the spot or very close to it and the target was in very good position (near front leg forward, etc)

from entry to exit was about 13". bullet recovered from ground on off side about 4" deep at about 20 degree angle into soft soil bank. pig fell 10 yds away but had taken a circular route of maybe 15 to 20 yds.

From the post mortem, I got exactly the results I would have expected from the shot. pig was somewhere between 100 and 120 pounds judged by 3 guys who do this a lot.

pigs lack any mental or emotional shock value. It really takes a lot of energy to stone one. maybe a 44 mag, 454 or 500 but I don't think any defensvie semi auto rounds is going to do it from a chest shot.

BTW I had to stop in Weatherford, TX gun store to get some .357 Sig cartridges cause I left the Underwoods on my gun bench (they had 12 boxes). I shot Winchester PDX1 125 HP. No bones were hit. Recovered bullet diameter was 0.54" (widest).

This adds no useable info to the discussion really save that for a hunting round the .357 Sig ballastics are exactly what you get. Nothing magic but not bad if you can hit the spot.

Package states muzzle velocity 1350fps, 5 yd - 1332fps, 25yd - 1262fps. Shot was at 12 yds

Edit - recovered bullets was intact and lost 5grs thru wound channel and dirt.

Rusty
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Old 01-20-2013, 16:47   #925
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pistol shooting is a game of billards. Shot angles are half the game and the target positions is everthing else assuming you can hit the spot. I did hit the spot or very close to it and the target was in very good position (near front leg forward, etc)

from entry to exit was about 13". bullet recovered from ground on off side about 4" deep at about 20 degree angle into soft soil bank. pig fell 10 yds away but had taken a circular route of maybe 15 to 20 yds.

From the post mortem, I got exactly the results I would have expected from the shot. pig was somewhere between 100 and 120 pounds judged by 3 guys who do this a lot.

pigs lack any mental or emotional shock value. It really takes a lot of energy to stone one. maybe a 44 mag, 454 or 500 but I don't think any defensvie semi auto rounds is going to do it from a chest shot.

BTW I had to stop in Weatherford, TX gun store to get some .357 Sig cartridges cause I left the Underwoods on my gun bench (they had 12 boxes). I shot Winchester PDX1 125 HP. No bones were hit. Recovered bullet diameter was 0.54" (widest).

This adds no useable info to the discussion really save that for a hunting round the .357 Sig ballastics are exactly what you get. Nothing magic but not bad if you can hit the spot.

Package states muzzle velocity 1350fps, 5 yd - 1332fps, 25yd - 1262fps. Shot was at 12 yds

Rusty
Interesting none the less, thanks.
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