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  #16  
Old 10-12-2021, 07:38 AM
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It's absolutely the ammo



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Mag318, I experienced the exact same problem in my Hamden Victor pistol, using fresh CCI SV ammo. Couldn't get through a single magazine without a jam. It's a low-mileage beauty, that I got from the original owner and its pristine. Cleaned the chamber Mirror-bright. Mags all have new Wolff springs. The CCI SV wouldn't pass the "plunk" test, in fact it failed miserably. Every other brand of 22 ammo passed just fine. Even went as far as to carefully collet-pull a bunch of bullets from a random handful, clean the virgin cases, and try to insert them into a mirror-clean chamber. No-go. About 1/3 of them would only go into the chamber half way and get tight. My S&W 41 digests the CCI just fine, so at least I have a use for it. Guess its combination of a tight chamber and ammo quality control.


Last edited by 1911; 10-12-2021 at 08:48 AM.
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  #17  
Old 10-12-2021, 08:46 AM
ParallaxBill

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I have the same problem with my early Victor. It simply does not like to chamber the CCI SV ammo when every other brand does fine. My 41 will also easily chamber the CCI.

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  #18  
Old 10-12-2021, 09:14 AM
LDBennett
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Sounds like your chamber is under sized or the ammo is wrong. Maybe it is the CCI SV ammo batch?

Do a Google search for the SAAMI cartridge/chamber specs for 22LR cartridges outside diameter. My search for a "Match" chamber shows 0.2267inches and up to 0.002inches larger. There are other chambers shown there. Sporting is 0.2307inches. The SAAMI spec for the cartridge diameter is 0.226 inches. The lead bullet spec is 0.2255inches and up to 0.0040 inches smaller. Anyway you can checkout those and other dimension there (saami.org).

To determine the problem you need to measure the cartridges with micrometers or calipers. The chamber can be accurately measure with machinist pin gages (a set of ground pins about an inch and a half long in sizes for ever thousandth of an inch). You can try calipers for the chamber(??).

My guess is you got an oversized batch of CCI SV. Any ammo bought today is suspect to me. When the ammo manufacturers are pushed to make lots of ammo, I suspect the quality control is the first thing to be compromised. All my CCI SV is several years old and feeds effortlessly in ALL my many target 22LR pistols and rifles.

If you find that the ammo is per spec, let me know and I can check the chamber size on my Texas Trophy and my ML Victor for comparison.

LDBennett

Last edited by LDBennett; 10-12-2021 at 09:18 AM.
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  #19  
Old 10-12-2021, 09:42 AM
John Stimson
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High Standard did not use a chamber made to SAAMI dimensions.

A better reference for High Standard would be the various factory drawings.
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  #20  
Old 10-12-2021, 11:13 AM
Alan Aronstein

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X- Series Chambers

I made an additional change to the "X-Series" Barrels. My testing has PROVEN that the NEW barrels made in our plant will out shoot the Conn made 10-x Barrels and the earlier TX 10-X Barrels.- Alan Aronstein
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  #21  
Old 10-12-2021, 05:54 PM
LDBennett
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1911 and others:

I just measured my several years old CCI SV 22LR cartridges. The case body measure 0.2235inches and the bullet measures 0.2245inches. That should fit the SAAMI spec Match chamber fine that is suppose to be 0.2267inches minimum.

If you measure your ammo and your chamber then maybe you can figure out where the problem is. Also this lot of ammo was NOT excessive lubed.

My Hi Std pistols are buried in one of my safes so I have not dug them out to measure their chambers. But I can if you wish. Just ask.

LDBennett
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  #22  
Old 10-13-2021, 12:47 PM
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mag318
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Thanks guys and 1911 I totally agree with you and thanks for the photo. It's definitely the ammo. These Victors or at least my example has a very tight chamber.
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  #23  
Old 10-14-2021, 01:17 AM
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Can you prussian blue a cleaned round in a clean chamber?
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  #24  
Old 10-17-2021, 04:41 PM
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mag318
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I tried the suggestion of wiping the excess lube off the CCI SV ammo and I'm happy to report it worked. Now the cartridges drop completely into the chamber and function fine. So thanks all for the suggestion.
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