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Joined: Fri Mar 18, 2011 11:39 pm
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Post Posted: Sun Mar 17, 2013 11:44 pm 
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I recently bought a old target pistol that comes with CENTAUR SYSTEMS Quadra-Lok barrel. Barrel does not have caliber marking, Metalform magazine does not have caliber marking either. Judging by the magazine style, for sure it is on in 45acp. The seller (dealer, not the original owner) don't have idea.

I put a 45acp snap cap in and the casing does not go into chamber all the way. Could it be 10mm? Is there anyone here know how many type of calibers CENTAUR SYSTEMS ever produced? and how can I can find out for sure which caliber?
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Joined: Sun Sep 18, 2011 11:57 pm
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Post Posted: Sun Mar 17, 2013 11:54 pm 
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I never had one but I admired the engineering of the Quadra-Lok set up.

As to the caliber, I don't know for sure but considering that the .45 ACP round is almost all the way in and the shape of the magazine, it could be chambered for a necked down .45 case topped by either a .38 or .40 bullet.

On the other hand, it might just be short chambered waiting for a 'smith to finish it. Need to look at the other end of the barrel to determine the caliber. Slugging the barrel would provide the most accurate answer.

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Joined: Sat Feb 19, 2011 8:38 pm
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Post Posted: Mon Mar 18, 2013 12:08 am 
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I can't say for sure but I would think that a .45 ACP cartridge would be too big in diameter to fit into a 10mm chamber. You'll have to measure it to be sure.

It's been a long time since I've seen a Centaur barrel. Were the lower lugs shaped like that originally or was that one modified? Your slide stop isn't original. The slide stop that came with it had a pocket machined on the top of the pin that held a long skinny roller bearing. You put shims under the roller bearing to adjust the lock up.

Also, that's a strange looking magazine! It looks like it is missing part of the lips and those two vertical cuts have been added. The vertical rib on the side means that it's probably not a .45 mag but I couldn't tell you if it was originally a 10mm or .38 Super. If it was a 9mm then it would also have a spacer inside at the rear of the mag.

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Joined: Sun Jan 20, 2013 1:12 am
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Post Posted: Mon Mar 18, 2013 1:18 am 
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Likely a .38/.45 Clerke. They were slightly popular for a bit. You don't mention the business end of the barrel so can't say for sure. If you measure it, it's likely .357 ish...

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Joined: Fri Feb 25, 2011 1:38 am
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Post Posted: Mon Mar 18, 2013 3:09 am 
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10MM CENTAUR.
.45 necked down to 10mm. Quite familiar with it. The slide stop looks modified to what Ray called a hard fit. The magazine was modified to allow the cases to be held by the shoulder yet spring outta the way for feeding. Plain .45 mags worked fine as well.

The dimple at the rear was supposed to catch the extractor groove of the case. I don't remember the splits at the front being original. I could be wrong.

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Joined: Fri Mar 18, 2011 11:39 pm
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Post Posted: Mon Mar 18, 2013 5:22 am 
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Thanks for all the reply. I will post a few more photos to show slide stop and magazine. Now I have another question on the recoil spring. If this is in 10mm, will I be able to use any full length guide rod/plug/spring that is designed for Colt 10mm 1911?

I found that Wolff still making spring for Centaur system. But I am not sure how to remove the spring from captive full-length guide rod. It has a hex socket front end, but I can not find any way to move it.
http://www.gunsprings.com/Semi-Auto%20P ... ID14/dID62


Last edited by mlin on Mon Mar 18, 2013 6:48 pm, edited 1 time in total.
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Post Posted: Mon Mar 18, 2013 5:51 am 
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Post Posted: Tue Dec 22, 2015 5:55 am 
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I know this is an old thread.........

I have quite few of Ray's barrels and knew him well on the phone.
If you still have questions re: your Quadralock 10mm Centaur let me know by replying back here!

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Post Posted: Tue Dec 22, 2015 10:24 pm 
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I only recently found that he is still around. I learned a lot from him..

Chuck

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Post Posted: Wed Jan 04, 2017 5:23 am 
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Hi All - I just learned that the Quadra-Lok barrels are being revived. The company doing it is Baiar Precision USA located in Columbia Falls, MT. I don't know just when they will be available but you might contact Mike Baiar at 406/253-3791.
I have no idea with what they will lead off but I understand that Ray Herriott is advising them.

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