G20L First Rounds

[40Magnum]

Fired the first rounds down the tube on my G20L today. It had been sitting static while I received the last parts to outfit it.

Currently, it consists of a 2nd Gen G21 frame with a LWD 3.5 connector installated. Recoil/Guiderod is a Glockmeister Tungsten non-captured with a Wolff 22 pound spring. I have a factory G20/21 assembly but did not test with it as I knew I would be firing factory and handloads during the session and wanted to see if it functioned well with both at 22 lbs.

Total rounds fired (short session) was about 75 rounds. First 15 were Federal 155 hi-shocks from quite a few years back. Sights didnt even need adjusted... it was dead on at 15 yards. Next, I tested a previous favorite handload:

180 Golden Sabres
10.8 800x
Starline brass
CCI 350

No signs of pressure. The chamber on this KKM barrel is pretty tight. Accuracy was good.

There were two failures, both with the handload. One stovepipe, one failure to feed.

As the brass was going straight back (and I mean almost straight back) only four feet or so, I'm wondering if the 22 pound spring is not a little too heavy. I may try a 20 pound to see if the slide is not quite going back all the way. Forgot to wear my hat today with shooting glasses and am now blessed with a wonderful burn mark above the right eye. As I'm a southpaw, brass came straight back, bounced off my right shoulder and then got hung up between my shooting glasses and eyebrow. Mark of honor, I told the wife.

All around, I'm very impressed. This weapon is accurate, recoil is obviously less than other 10mm pistols and looks quite unique at the range. I don't even want to guess what kind of velocity that handload does in this gun. It was a nice load in my previous KKM barreled G20 that was nearly 1.5 inches shorter.

http://i13.tinypic.com/34ih2bl.jpg

[Brass Nazi]

I would decrease the spring weight to factory level or less as the added mass of the slide provides more inertia.

[Steve Koski]

Just dump in some more powder.

[ColoradoGlocker]

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[Neal]

First, is LWD, or wheover sold these long slides for the large frame Glocks, planning on another run of them?

Second, if these slides were designed for .45 acp, then the breechface would be considerably larger than the 10mm breechface on the Model 20, right? I have a 20 but not a 21 so I cannot compare them. If this assumtion is correct, then how is it the extractor and/or ejector works so well with the smaller diameter 10mm case?

[saspic]

Check this thread for more information.

http://glocktalk.com/showthread.php?s=&threadid=317427

Basically, the ejector is the same for .45 ACP and 10mm in GLOCKs.
The Loaded Chamber Indicator version of the .45 ACP extractor has proven reliable for 10mm. So all you need is the conversion barrel and magazines.

I'm waiting for Lone Wolf Distributors to come out with the dedicated 10x25mm longslide. Hopefully it will happen next February at the 2007 SHOT show!:cheerleader:

[Neal]

Originally posted by saspic
Check this thread for more information.

http://glocktalk.com/showthread.php?s=&threadid=317427

Basically, the ejector is the same for .45 ACP and 10mm in GLOCKs.
The Loaded Chamber Indicator version of the .45 ACP extractor has proven reliable for 10mm. So all you need is the conversion barrel and magazines.

I'm waiting for Lone Wolf Distributors to come out with the dedicated 10x25mm longslide. Hopefully it will happen next February at the 2007 SHOT show!:cheerleader:

Thanks for the info.

[nickE10mm]

The last time I posted about going to the range w/ my G20L I was having several failures to feed (about every other round!) I had nearly flawless function before and was upset about these issues. I asked myself...what did I change? The only thing I had changed is the recoil assembly. I had gone to a stainless captured 20lb setup, figuring since I shoot almost exclusively hot loads and DT. Seems like the 20lb spring was "short stroking" and coming back into battery before the next found could pop up high enough to chamber (and I even have Wolf XP mag springs). I changed back to my stock recoil setup (17lb plastic Glock OEM) during my recent hunting trip to the Ozarks and everything functioned like BUTTER, perfect with no exceptions. I have come to realize that 17lb spring w/ 4.5 extra ounces of slide weight is just fine for me.

[ColoradoGlocker]

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[nickE10mm]

Originally posted by ColoradoGlocker
Yep nickE10, that's what I've found out too. However, I have my ISMI 17# recoil spring on a THE SS captured rod and my 22# one on another. So changing between spring weights is a 15 second exercise.

My stainless rod came with a 17lb spring on it and I also ordered a 20lb spring to interchange w/ it, but since its a captured setup, it takes a couple minutes to change it out since Locktite is involved. I'm not junking my stuff but rather just using what works for me now :) Reliability is the most important aspect to me w/ this pistol right now.

One thing I've been pondering is if a different or modified EJECTOR might make ejection of spent cartridges more reliable (for example, off to the RIGHT of the gun and not straight back, which I have occasionally experienced). Have you noticed that if you hand cycle a mag of loaded rounds through the gun, the cartridges don't "eject out", they just kind of "fall" out? Strange. I know WHY it happens but I don't know how to fix it...

(sorry to sort of hijack your thread but its all related) ;)