http://www.igbaustria.com/shop/product_info.php?info=p47_igb-custom-barrel-for-glock-20.html

The barrel's not the problem. I don't think I'll need a new slide. But a new magazine?

Hello,

there's an aftermarket barrel for the Glock20 in .357Sig. What else is to be changed, when I want to shoot 357sig out of my G20?

Tom

Quote from: The Earl o Sammich on October 12 2016 08:56:03 PM MDT

It's a case, not a shell.  Shot guns shoot shot gun shells.  Not saying this to be a dick but I wouldn't want you to go on using the wrong terms.

Not familiar with the Glock 20 but if it has a supported chamber the brass life will be like any other round you reload for.  If the brass is not over worked, i.e. resized too small and then expanded in the chamber to be resized too small again, you can get plenty of cycles out a case.

Are you working up loads or are you starting with store bought/factory ammo?

Either way, mic the brass at the head and watch for bulging.  If the case starts to swell just above the head, that will tell you whether your case/chamber has decent support.  Otherwise reload until you see a few mouths split.  You can check finished rounds by pressing the bullet onto a hard surface and rotating the round.  If the head has a crack it will be come apparent.

Hi Earl
I never used factory ammo in my Glock. As a matter of fact, I shot one box(100 reloaded rounds with new brass) til now, since I have the Glock for 2 weeks. I began with 9gn, minimum is 8.6, max is 9.9, due to loading table. I had noticable bulges, but no mouth splits. Resizing was no problem, the shells/cases look good, as far as I can evaluate that.
And the shell/case issue: why are these http://leeprecision.com/shell-holders/ referred to as "shellholders"? I just ask, I'm not a native speaker

I used my (new) brass once, reloading it now for the first time. I pushed it into the Lee resizing die and it looks quite good. All bulges are trimmed away. Do you think it's a risk to shoot this ammo? See my photo, I hope it's not too small

[attachment deleted by admin]

Quote from: Benchrst on October 12 2016 06:27:22 AM MDT
Hey Tom


A lot of variables to accurately guess an answer your question, but if your G20 is a Gen4 (case support is good), and you're loading less than nuclear, then you should expect pretty decent case life.

I've got a Gen4 and use Starline; I know I have cases that have been loaded 6-8 times (shoot em' till they split), though I do use an AF barrel that's a bit tighter than factory, so your mileage may vary.

New brass for the hot stuff, everything else I shoot till I loose it or the neck is too sloppy

Ok, thanx.
What exactly do you mean by 'splitting'?  The shell gets some kind of tear, crack etc. or the shell disintegrates at the shot? My reloading experience is limited to 45-70 Gov't, and I never had any shell damages there. I discard the the brass when the primer pocket gets too loose and I've little gun smoke on the bolt and the shell bottom.
How dangerous is a shell disrupting in the chamber at shot?
And yes, it's a Gen4

Tom

Hi,

my name is Tom, and I'm a new Glock20 owner. I'm also a reloader. Last weekend, I shot a box of 10mm ammo with my Glock: new Starline brass, 180gn Frontier bullet and 9gn of VV N105. I've never shot factory ammo with my Glock, and I have the stock barrel.
So, what are your experiences with reloading ammo for the Glock20? I can reload my 45-70 shells 20 times and more, but after inspecting the brass, my feeling says it will be far less than 20 times :-(

Tom