Glock 20 Guide Rod Comparison & Recoil Test Part I - video -

[MrRedbull616]

http://www.youtube.com/watch?v=lkz492WFtkM

[The_Shadow]

Thank you for yet another great video, great info! 
In my test using the 24lb springs for my S&W1006 and the 23 lb spring in the G-29 all functioned, even the 40S&W ammo cycled but the racking of the slide was greatly increased in both guns.

Like your results my 357Sig dropped at my feet 2' at the most and the 9x25Dillon dropped close by within about 4'.

[Intercooler]

So this proves what others found in Glock 10mm's where the spread and velocity varies more with a weaker spring as opposed to a hammer fired pistol.

[MrRedbull616]

I used probably the weakest 357sig out there...to show that even a 24# wolff spring would cycle it.  What surprised me was that a 17lb didn't kick out the brass any further than the 24# round spring.

Why it's so surprising....is because the difference in how hard it is to rack the slide with a 17lb flat spring vs a 24# round spring (wolff) is night and day!


anyway I'm looking forward to doing part two. I really want to see if there is a difference in accuracy or point of impact shift.

also want to see the reliability. The more I played with the 24 round spring vs 22lb ism flat  and the more I watched the videos the round spring seems to slow down the slide to much and I feel it could lead to function issues. After all the gun was designed with a flat spring. But that is why I test stuff ...to be sure.

[The_Shadow]

I have read where some feel the round spring (Wolff) in the Glock 20 tends to bunch up inside at full rearward travel, whereas the flat wound spring provides additional space for full travel!  I wish we could see if this is the case~!

[REDLINE]

Awesome MrRedbull616.  Thanks for taking the time and sharing it!

[MrRedbull616]

The_Shadow

before this test I bought the wolff round, 20lb 22lb and 24lb ...for some reason the lighter springs were longer and heavier springs were shorter.  Doesn't seem to make sense to me  but that meant the heavier springs didn't bind up and the lighter ones did.

Conversely the 24ISM (bought and tried before this video) was the longest of the flat springs and seemed to bind up a little bit.  Probably why ISM no longer makes it.

From what I know ISM (small father son shop) redesigned the spring with a new hybrid steel which is what is now used in the 22lb springs being put out.   I know the Brass stacker felt a little bit stiffer than the glockstore tungsten guide rod.  My guess is because GS doesn't sell as many tungstens and thus that 22lb was old inventory...older style ISM 22lb. 

Basically the new hybrid ISM 22lb springs were quoted to me as being more like 23.5lbs if measured by the old standard but they just stayed with calling it 22lb.

Bottom line for me is...

1. I saw no added value with the tungsten  plus for the price that brass stacker charges ($22 shipped) I can get two of them for less than the price of the tungsten by glock store  ($50+5 shipping).

2. I did not like how the spring was riding the thinner lone wolf guide rod vs the thicker brass stacker guide rod. Plus the lone wolf actually costs more.

3. I saw no difference between the 22lb and 24lb wolff.

4. I've got about 1000rds on the 24# wolff now and probably after 400-500rds it started to lose some of it's power/memory.  I have about 500rds on the brass stacker ISM and there seems to be no loss of power/spring memory.

5. all that said I have narrowed it down to testing the 22lb brass stacker vs the 24# wolff for part 2 of the video/test - I will use brand new springs in part 2 so it's apples to apples.

6. Even if your a stocker (swear by stock glock) the evidence so far suggests there is no harm in using at least the 22lb ISM setup and only benefits as it would a. recoil less. b. beat up the gun less. c. likely make you more accurate as you wouldn't have a flinch or as much of a flinch... d. reduce ES (extreme spread) e. in my experience gives a slight increase in velocity.

[MrRedbull616]

also note worthy  on the tungsten guide rod (which I bought new) I noticed what I would describe as chatter marks maybe galling would be a better description?

These seems to happen on other tungsten guide rods as well...owned lone wolf and glockmiester.   Maybe they are all outsourced to the same place? who knows?

Anyway, while I think it's unlikely these marks would degrade reliability...they happened inside of 100-200rds ...so what do they look like to a serious shooter at 5000-1000rds? Plus if I'm paying $50+ for a guide rod...it just would bother me that it's doing it.

Still I like the idea of the tungsten GR, but for me, it just doesn't meet my expectations.