9mm in a .40 - XDTalk Forums - Your HS2000/SA-XD Information Source!

Timmy44221 · 10-01-2006, 07:08 PM

Ok so I know to convert a .40 to 9mm all you need is a new barrel. Even the .40 mag can take 9mm. So the 13rd .40 mag holds like 16-17 9mm. How many 9mm will the .40 SC mag hold. I know you may need to modify the lips of the mag, but theoreticly you can fit more than 10 9mm rounds in the .40 mag, since it hold 10rds of .40. Right?

This would be great for CCW as oyu can retain the shorter grip, but gain more rounds.

**XDAndMe** · 10-01-2006, 07:25 PM

Some will tell you that there's something to be said about reliability when you do this.

coastemac · 10-01-2006, 07:28 PM

OK, so I want to learn more now... going to buy a 9mm next for IDPA, but wanted a .40... now you are telling me that I can have both? Do tell...

FS2K · 10-01-2006, 07:28 PM

Which is what I was thinking. You'd be better off just getting a 9mm XD SC if that were the case, and carry a back up magazine.

FS2K · 10-01-2006, 07:33 PM

Quote:

Originally Posted by coastemac

OK, so I want to learn more now... going to buy a 9mm next for IDPA, but wanted a .40... now you are telling me that I can have both? Do tell...

Dimenionally they use the same frame, so in theory all you would need to make your 9mm into a RELIABLE .40 S&W is a Slide & barrel & magazine.

I know in the past manefacturers like Glock would be OK with retro fitting a 9mm set-up on a .40 frame, but not the other way around, seeing as the .40 caliber components were a little beefier to handle the added recoil of the .40. This may not be so for the XD. I hope you realize then if a .40 can be retro-fitted for 9mm, it can also be for .357 Sig as well.

**XDAndMe** · 10-01-2006, 07:36 PM

http://www.pistolgear.com/proddetail.php?prod=37EFA

coastemac · 10-01-2006, 07:36 PM

Ive known about the .357... was told once all you needed was the barrel, didnt even need to change mags. But I dont think all this is worth it, Im just going to buy more guns, seems easier...

Nerves · 10-01-2006, 07:50 PM

Quote:

Originally Posted by coastemac

Ive known about the .357... was told once all you needed was the barrel, didnt even need to change mags. But I dont think all this is worth it, Im just going to buy more guns, seems easier...

I'm with you, I'm thinking of getting the 9mm Tac just for USPSA and/or IDPA.

JD McDorce · 10-01-2006, 07:55 PM

Quote:

Originally Posted by Timmy44221

... .40 mag can take 9mm. So the 13rd .40 mag holds like 16-17 9mm. How many 9mm will the .40 SC mag hold. I know you may need to modify the lips of the mag, but theoreticly you can fit more than 10 9mm rounds in the .40 mag, since it hold 10rds of .40. Right?

How much of this is based on the premise that someone is actually making a conversion barrel for the SC?

**Bycyclist** · 10-01-2006, 08:03 PM

I'm in this process right this moment. I've got my XD40 posted for sale, or will do a conversion to a XD9. But when I price out how to do this "right", seems like about $300 (efk + fit barrel + 4-5 9mm mags). May be less hassle to just get the XD9Tac (if I can find one).

10-01-2006, 07:08 PM	#1
Timmy44221 XDTalk 500 Member Join Date: Apr 2006 Posts: 797	9mm in a .40 Ok so I know to convert a .40 to 9mm all you need is a new barrel. Even the .40 mag can take 9mm. So the 13rd .40 mag holds like 16-17 9mm. How many 9mm will the .40 SC mag hold. I know you may need to modify the lips of the mag, but theoreticly you can fit more than 10 9mm rounds in the .40 mag, since it hold 10rds of .40. Right? This would be great for CCW as oyu can retain the shorter grip, but gain more rounds.

10-01-2006, 07:28 PM	#3
coastemac XDTalk 1K Member Join Date: Aug 2006 Location: Miami Area, Florida Posts: 1,194	OK, so I want to learn more now... going to buy a 9mm next for IDPA, but wanted a .40... now you are telling me that I can have both? Do tell... __________________ coastemac U.S. Coast Guard Gunnersmate XD Service Dark Earth .45 ACP (new) XD Sub-Compact Bi-Tone .40 cal Savage Model 10 FP (6X-18X 42mm) Marlin Model 336RC 30-30 Marlin Model 17VS .17 HMR Taurus PT-908 9mm Ruger 22/45 .22lr (and a few others...)

10-01-2006, 07:36 PM	#7
coastemac XDTalk 1K Member Join Date: Aug 2006 Location: Miami Area, Florida Posts: 1,194	Ive known about the .357... was told once all you needed was the barrel, didnt even need to change mags. But I dont think all this is worth it, Im just going to buy more guns, seems easier... __________________ coastemac U.S. Coast Guard Gunnersmate XD Service Dark Earth .45 ACP (new) XD Sub-Compact Bi-Tone .40 cal Savage Model 10 FP (6X-18X 42mm) Marlin Model 336RC 30-30 Marlin Model 17VS .17 HMR Taurus PT-908 9mm Ruger 22/45 .22lr (and a few others...)

10-01-2006, 08:03 PM	#10
Bycyclist XDTalk 1K Member Join Date: Aug 2006 Location: NorCaliforneeya Posts: 1,829	I'm in this process right this moment. I've got my XD40 posted for sale, or will do a conversion to a XD9. But when I price out how to do this "right", seems like about $300 (efk + fit barrel + 4-5 9mm mags). May be less hassle to just get the XD9Tac (if I can find one). __________________ =============================================== BYcyclist - the worst day on a ride (or at the range) is better than the best day in the office ===============================================

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10-01-2006, 07:25 PM	#2
XDAndMe XDTalk 3K Member Join Date: Sep 2006 Location: PA, USA Posts: 3,402	Some will tell you that there's something to be said about reliability when you do this.

10-01-2006, 07:28 PM	#4
FS2K XDTalk Newbie Join Date: Sep 2006 Posts: 15	Which is what I was thinking. You'd be better off just getting a 9mm XD SC if that were the case, and carry a back up magazine.