I purchased a Lone Wolf 6" 9mm (9x19, 9mm Luger, etc) conversion barrel for my Glock 20 (10mm), and reamed the chamber to accept 9x23 Winchester cartridges. I chose this over the 38 Super barrel for several reasons. 1) I felt the tapered 9mm case would feed and extract more reliably than the straight walled 38 Super. 2) 9x23 Winchester doesn't have a large rim. 3) the 9x23 Winchester brass is stronger than the 38 Super brass, and it can be loaded to a higher pressure. 4) A 9x23 Winchester chamber can accept a 38 Super cartridge easier than a 38 Super chamber can accept a 9x23 Winchester cartridge. In a 9x23 chamber a 38 Super cartridge will be held tight at the front, and the base is a little loose. In a 38 Super chamber a 9x23 cartridge will be loose at the front, and tight at the back. The back of the 9x23 cartridge may not fit into a tight 38 Super barrel.

I had 4 different loads. I tried some cast bullets, Lee 358-158-RF and Lee 358-125-RF resized to 9mm, and some jacketed bullets. The cast bullets didn't do very good. The flat nose sometimes jammed against the top of the barrel during feeding: The 158 grain was the worst. I think this was mainly because the 9mm case was in a 10mm magazine, and the lips are too wide to properly feed 9mm cases. I also tried some 125 grain Remington JHP 38 special bullets resized to 9mm, but they also jammed sometimes. I had some success using 115 Grain Winchester FMJ ball bullets.

I used my standard 9mm dies to reload the 9x23 cartridge.

Below is a picture of my target (@ 10 yards) for the 115 grain Winchester FMJ bullets and the 125 grain JHP bullets. Each target has 10 shots even if it doesn't look like it. Not great, but not bad. The 9x23 makes an authoritative BANG.



I did not have a chronograph at the range, so I don't know the velocity.

I also tried some factory Fiocchi 38 Super ammo. The step on the base cause a lot of jams. Almost every cartridge had problems feeding from the G20 magazine. Because the 9x23 chamber is larger at the rear than the 38 Super cartridge, and the Glock 20 slide has a cutout to fit the 10mm base, the G20 extractor pushed the 38 Super cartridge to the left. This made the right side of the 38 Super cartridge have a slight bulge. The 38 Super cases should still be good for reloading a few times.

I forgot to say I used a 22# Wolf Spring.

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I would say you have an excellent trigger finger and fine shooting. I wish I could hold that tight with my Glock 20, I finally did some trigger work, need to take it out to the range to test.

All the failures stressed me out from reading this. Have you considered 9x25 Dillon?

As long as you had fun.  Reminds me of friends of mine back in the 70s who would cut down 308 rifle brass I think it was and see how much fast burning powder they could dump in trying to make a 45 ACP Mag.  I guess guys like that are where the 451 Detonics and everything that followed came from.

Quote from: Dave84 on February 22 2015 03:05:27 PM MST
All the failures stressed me out from reading this. Have you considered 9x25 Dillon?

Do you mean all the jams?

That was because I was putting 9mm sized brass in a 10mm magazine. It would be like taking a reliable Glock 20, and using a 45ACP magazine to shoot 10mm.

I thought about 9x25, but the reloading dies are too expensive. I can use my regular 9mm Luger dies to reload 9x23.



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Quote from: my_old_glock on February 22 2015 07:39:18 PM MST

Quote from: Dave84 on February 22 2015 03:05:27 PM MST
All the failures stressed me out from reading this. Have you considered 9x25 Dillon?

Do you mean all the jams?

That was because I was putting 9mm sized brass in a 10mm magazine. It would be like taking a reliable Glock 20, and using a 45ACP magazine to shoot 10mm.

I thought about 9x25, but the reloading dies are too expensive. I can use my regular 9mm Luger dies to reload 9x23.



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9x23 - I need to study this one. Doe it have a subtle taper?

Quote from: Pablo on February 22 2015 08:27:44 PM MST

Quote from: my_old_glock on February 22 2015 07:39:18 PM MST

Quote from: Dave84 on February 22 2015 03:05:27 PM MST
All the failures stressed me out from reading this. Have you considered 9x25 Dillon?

Do you mean all the jams?

That was because I was putting 9mm sized brass in a 10mm magazine. It would be like taking a reliable Glock 20, and using a 45ACP magazine to shoot 10mm.

I thought about 9x25, but the reloading dies are too expensive. I can use my regular 9mm Luger dies to reload 9x23.



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9x23 - I need to study this one. Doe it have a subtle taper?

Yes. It is a stretched 9x19 (9mm Luger). The base and the nose is the same size as a 9x19, but the length is 4mm longer, so there is less taper in the 9x23 than the 9x19.

https://en.wikipedia.org/wiki/9%C3%9723mm_Winchester

http://www.shootingtimes.com/ammo/cartridge-review-9x23-winchester/


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Also, the 9X23 runs at 55,000 PSI MAP, where the 9mm Luger/Parabellum/X19 runs at 33,000 PSI.  So, about double the working case capacity, and just short of double the working pressure.

9x23

Next on the bucket list.

Still enjoying the 9X25!!

Quote from: my_old_glock on February 22 2015 07:39:18 PM MST

Quote from: Dave84 on February 22 2015 03:05:27 PM MST
All the failures stressed me out from reading this. Have you considered 9x25 Dillon?

Do you mean all the jams?

That was because I was putting 9mm sized brass in a 10mm magazine. It would be like taking a reliable Glock 20, and using a 45ACP magazine to shoot 10mm.

I thought about 9x25, but the reloading dies are too expensive. I can use my regular 9mm Luger dies to reload 9x23.



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You find any kind of solution for that?

Quote from: Dave84 on February 23 2015 06:08:07 PM MST

You find any kind of solution for that?

Several sources on the internet say to bend in the feed lips a little, but I have been trying to avoid that. I am in California, and I bought high-cap 10mm magazines before the 10 round law went into effect, so I can still have them and use them, but if I damage them I can't get replacements. I need to try bending the feed lips on a 10 round 10mm magazine first.


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Heck yeah. Test it on a Clinton mag. I'd leave your pre ban mags alone.

Quote from: Dave84 on February 23 2015 06:08:07 PM MST

Quote from: my_old_glock on February 22 2015 07:39:18 PM MST

Quote from: Dave84 on February 22 2015 03:05:27 PM MST
All the failures stressed me out from reading this. Have you considered 9x25 Dillon?

Do you mean all the jams?

That was because I was putting 9mm sized brass in a 10mm magazine. It would be like taking a reliable Glock 20, and using a 45ACP magazine to shoot 10mm.

I thought about 9x25, but the reloading dies are too expensive. I can use my regular 9mm Luger dies to reload 9x23.



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You find any kind of solution for that?

Buy your "normal capacity magazines" out of state and lie like the proverbial rug.

Quote from: Captain O on September 03 2015 11:42:11 AM MDT

Quote from: Dave84 on February 23 2015 06:08:07 PM MST

Quote from: my_old_glock on February 22 2015 07:39:18 PM MST

Quote from: Dave84 on February 22 2015 03:05:27 PM MST
All the failures stressed me out from reading this. Have you considered 9x25 Dillon?

Do you mean all the jams?

That was because I was putting 9mm sized brass in a 10mm magazine. It would be like taking a reliable Glock 20, and using a 45ACP magazine to shoot 10mm.

I thought about 9x25, but the reloading dies are too expensive. I can use my regular 9mm Luger dies to reload 9x23.



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You find any kind of solution for that?

Buy your "normal capacity magazines" out of state and lie like the proverbial rug.

This only works with some pistols in some (unconstitutional) states. If standard capacity mags are grandfathered, then later generation mags are easily identified as illegal, absent a manufacturer's replacement letter. Currently, all Gen 4 Glock standard capacity (over 10) mags are prohibited in CA to most people. To my knowledge, Glock is no longer manufacturing related Gen 3 mags. I suppose you could pull it off if you found some used or old stock.

I was able to run the 9x23 loads through a chronograph. The 115gr FMJ bullet was 1600fps. The 125gr JHP was 1560fps. This was at 35* Fahrenheit. To me these loads were very accurate.






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