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Probably for the same reason Keith told you in 2019:

When we first started building 9mm's in quantity, we used the 9mm ejector but over time I found that I was grinding a majority of these back to improve cycling and ejecting spent brass. So much so that I then machined the remainder of our stock down to 38 ejector length and never looked back.

The extra long ejector makes sense in theory and if custom tuned for a specific pistol with a specific problem but in the real world make no sense at all.
https://forums.1911forum.com/showthread.php?p=12799002

;)
 

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Discussion Starter #3 (Edited)
Probably for the same reason Keith told you in 2019:



https://forums.1911forum.com/showthread.php?p=12799002

;)
Lol. Funny how the same train of thought came around in my head again. I'm experiencing some erratic ejection with my 9mm Commander and one recommendation was to use a longer ejector. A few smiths say that they prefer to get the empty brass moving out of the gun as soon as possible.
 

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Lol. Funny how the same train of thought came around in my head again. I'm experiencing some erratic ejection with my 9mm Commander and one recommendation was to use a longer ejector. A few smiths say that they prefer to get the empty brass moving out of the gun as soon as possible.
I was getting some erratic ejection on my DW PM9. I discovered my thumb was running slightly agaist the slide. I didn't even feel it, but Keith at DW told me to pay attention to it and see if it went away. That was it. There is less authority with the 9 mm recoil and the little difference in resistance made a difference in ejection.

My pm9 slide was also slow. Some guys had success stepping up the spring tension by 1 lb. My gun did better running a spring one lb lighter than stock.

Be careful if you decide to experiment with extractor tension. I've found the window of adjustment is much smaller than 45 . It might be just my gun. Im curious if others have noticed this
 

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In my PM-9 I use a 12# recoil spring and a 21# main spring and have no problems with the gun whatsoever. Now has approx. 11,500 rounds through it and have owned the gun for 14 months.
Yes I do shoot it!
 

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Discussion Starter #6
I was getting some erratic ejection on my DW PM9. I discovered my thumb was running slightly agaist the slide. I didn't even feel it, but Keith at DW told me to pay attention to it and see if it went away. That was it. There is less authority with the 9 mm recoil and the little difference in resistance made a difference in ejection.

My pm9 slide was also slow. Some guys had success stepping up the spring tension by 1 lb. My gun did better running a spring one lb lighter than stock.

Be careful if you decide to experiment with extractor tension. I've found the window of adjustment is much smaller than 45 . It might be just my gun. Im curious if others have noticed this
Very interesting point about riding the slide. I'll have to look into that.

One of the smiths I talked to recommended going down on the recoil spring. I've got the OEM 12 lb in the gun right now. As mentioned, the gun is a Valor Commander.

I'm also discovering that 9mm extractors are a bit more of a pain than 45 ACP extractors.

https://www.1911addicts.com/threads/9mm-extractor-tension.92731/
 

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I gotta have more cowbell
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In my PM-9 I use a 12# recoil spring and a 21# main spring and have no problems with the gun whatsoever. Now has approx. 11,500 rounds through it and have owned the gun for 14 months.
Yes I do shoot it!
I don't know what main spring came in my PM 9. Did you change yours to 21#? If so, do you know the factory spring weight
 
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