OP here:

So after several months at the gunsmith, where he was convinced that it was an extractor issue, and all he did in that time was Polish the extractor, he claimed the gun only had 1 FTF in 100 rounds ( and since we were nearing the 500 round break in period (!!), even that would be soon resolved, I was very excited to finally get it back. 

Unfortunately, I couldn?t even get the first round to chamber using the factory mag when fully loaded.  Using only 15 rounds allowed the round to chamber (ps: The Wilson Combat mags I bought, way back when people were telling me I only needed better mags).  Nevertheless, whether stock or WC mags, I?m still getting 3-5 FTF per mag.

The gun totally sucks. 

Either it is only RIA?s well documented struggles, or 10mm generally not performing in the 1911 models (ie., I have other 10mm 1911?s which suck in this caliber as well).

I?m sure McKinsey to think any 10mm is a roll of the dice.

How refreshing it was to just pull out my Glock 21 .45 loaded with Underwood JHP, and know every round would cycle and fire properly.

I?m done with 10mm and 1911?s.  They absolutely suck.

Quote from: Alabusa on February 15 2022 07:52:38 PM MST
Get another G20 and put a KKM barrel in it. Problem solved.

Do you mean that, if I had a hot round, but was using a KKM (or other barrel with a fully supported chamber), I would not have had a Kaboom?

Hi Guys-

So I had a Kaboom! on my Gen 4 Glock 20 at the range (have pics) using some reloads a friend loaned me.  Everything looked good on the rounds, but it happened (blew the rear bottom of the round out, the magazine release hit me just under the eye and stuck in my face; my right hand had pinch and burn, but was not seriously injured; magazine shot straight down to floor, and bottom f mag place blew out; frame on the lower cracked, so gun is junk).

Here's my question: After plenty of research, I know all about Glock's unsupported chambers; also know not to use someone else's loads; but since it happened, I'm reluctant to purchase another Glock 20 again for this reason: Prior to the reloads, I had been firing Underwood JHP (180 gr), and wondered if that ammo weakened the barrel, or if it was purely a hot load?

Regardless of th answer to that, is it REALLY safe to fire Underwood ammo out of a Glock?

Most importantly: Is there a 10mm that has a goo reputation for being able to handle Underwood ammo (or at least a good reputation for not blowing up)?  I see a million Glock 20 Kaboom vids posted, and I think even if it was the reload, I'm not going to risk Glock again in 10mm.

What's the best/safest 10mm gun?