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View Full Version : CZ75B .40 to 10mm?


Hammertime
09-13-2012, 9:32 AM
Hi there, I've been looking into the possibility of buying this http://czcustom.com/danwessonmatch10mmbarrel.aspx 10mm barrel and dropping it in to my .40 CZ75B, but was wondering if it was just that simple, or if it is incompatible?

If it drops in, would I just need 10mm mags?

Thank you for your help.

Ubermcoupe
09-13-2012, 9:40 AM
I’ve have not tried such a conversion, but I do shoot 10mm, so my first inclinations about this are:

Generally, because 10mm is longer than the .40SW it may not fit directly into the mags without modification.

The biggest issue with an “up” conversion such as this is the power generated from the 10mm and the wear and tear on the frame.
CZs are really solid pistols so I assume it could handle the power, but for how long I am not so sure.

elsolo
09-13-2012, 9:40 AM
It will not work.

The 10mm cartridge has an overall length too long for the CZ-75 action which was designed around a 9x19 cartridge length. The bullets are longer than the mags.
Second, a 1911 barrel isn't some universal fit part for all handguns, it fits 1911's and that's all.

There are CZ clones available in 10mm

bruss01
09-13-2012, 9:47 AM
^^^ THIS ^^^

I believe the OP has made a bit of a misunderstanding.

The part depicted at the link in the OP is not for a CZ 75b... it is for a 1911.

A few years back CZ acquired Dan Wesson, a maker of high-end revolvers and 1911's. This part is for conversion of a Dan Wesson 1911, not a CZ 75b. It's not interchangeable, not even close.

Sicarius
09-13-2012, 10:05 AM
Won't work. Typically the .45 frame of any make is used for 10mm. Not sure how the 9mm frame will do it...
Kevin

NytWolf
09-13-2012, 10:17 AM
Conversions typically start with a handgun made for a .45 acp. The .45 acp and 10mm are similar in length enough to allow it. Evidently previous conversions (http://www.ar15armory.com/forums/Project-Conversion-10mm-f260.html) that were successful, the process is more involved than simply dropping in a barrel and finding a magazine that fits the cartridge. You need an entire new slide with innards.

Euphoria526
09-13-2012, 10:28 AM
I thought 10mm was closer to .40?
Yeah this will not work as clearly stated on the site.
It's a 1911 barrel. NOT a cz75 barrel

NytWolf
09-13-2012, 10:42 AM
The 10mm bullet is the same as a .40 cal bullet. The difference is the brass. The 10mm is much longer than the .40S&W, hence the moniker, .40 "short and weak".

JeremyS
09-13-2012, 10:48 AM
People have converted CZ 97's to 10mm (using EAA Witness parts). The 97 starts as a .45. You can't fit the length of a 10mm cartridge into the frame size of the CZ75, I do not believe. The 97 frame is larger and can do it no problem. It would be easier to just buy a Witness in 10mm.

As stated multiple times above, the barrel OP linked is for a 1911 and in no way would ever fit in a CZ75-based gun.

SilverTauron
09-13-2012, 10:54 AM
NO.

The pressure of a 10mm full house load requires a frame built to handle the stress.Part of the reason .40 S&W is so popular is because gun companies can stick a lower pressure .40 S&W barrel and slide on a 9mm frame and not worry about the pistol self destructing. When 10mm first came out gun companies did more or less exactly what the OP is proposing, and cracked frames and slides were the result.

The best 10mm handguns in terms of reliability out the box are models designed from the ground up in the caliber, like the Glock 20 and the 1006 S&W.

J.D.Allen
09-13-2012, 11:54 AM
Two words. Bren Ten. :D

elsolo
09-13-2012, 12:07 PM
NO.

The pressure of a 10mm full house load requires a frame built to handle the stress.Part of the reason .40 S&W is so popular is because gun companies can stick a lower pressure .40 S&W barrel and slide on a 9mm frame and not worry about the pistol self destructing. When 10mm first came out gun companies did more or less exactly what the OP is proposing, and cracked frames and slides were the result.

The best 10mm handguns in terms of reliability out the box are models designed from the ground up in the caliber, like the Glock 20 and the 1006 S&W.

Max SAAMI pressures:
9mm Luger - 35,000
9mm Luger +P 38,500
40 S&W - 35,000
10mm Auto - 37,500

SDRider858
09-13-2012, 2:02 PM
People have converted CZ 97's to 10mm (using EAA Witness parts). The 97 starts as a .45. You can't fit the length of a 10mm cartridge into the frame size of the CZ75, I do not believe. The 97 frame is larger and can do it no problem. It would be easier to just buy a Witness in 10mm.

As stated multiple times above, the barrel OP linked is for a 1911 and in no way would ever fit in a CZ75-based gun.

Any additional info on this mod? I'd be interested to experiment if sourcing the parts is possible within reason

JeremyS
09-13-2012, 3:22 PM
It's not within reason. Takes serious modification to the barrel, as the locking lugs aren't quite the same and the 97B uses a bushing. You'd have to weld and cut.

Much easier to just buy an EAA or the Sarsilmaz K2 (19+1 capacity in 10mm, btw) that they are now importing. LOTS of 10mm options imported by EAA.

http://www.eaacorp.com/

SDRider858
09-13-2012, 3:28 PM
It's not within reason. Takes serious modification to the barrel, as the locking lugs aren't quite the same and the 97B uses a bushing. You'd have to weld and cut.

Much easier to just buy an EAA or the Sarsilmaz K2 (19+1 capacity in 10mm, btw) that they are now importing. LOTS of 10mm options imported by EAA.

http://www.eaacorp.com/


19+1 of 10mm sounds like the goodness.....to bad about CA. Thanks for the info, I assumed that was going to be the case. Might have to look into a EAA but depending on price and if I really want a 10mm, I might get another 1911,

zfields
09-13-2012, 3:34 PM
I'd just go EAA, very modular gun.

2nd Shot
09-13-2012, 5:41 PM
As has been mentioned, 10mm is a pretty long cartridge and needs a .45 frame pistol with a mag well and action sized big enough to make it work.

You'd definitely be better off buying an EAA Witness, though be warned - full power 10mm has been known to break EAA's (along with older 1911's and other early platforms, for that matter). They may have reliefs in the frame and other tweaks for durability now though. Glocks and Modern 10mm 1911's are probably the most durable choices, and the out of production S&W 1006/1076 is also a solid purpose built brick of a gun as well.

Hammertime
09-14-2012, 1:29 AM
Thank you all for the schooling! Kind of sad there isn't a 10mm CZ out there. Maybe one day!