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 Post subject: Re: Poll TT-33 or CZ-52
PostPosted: Wed Sep 30, 2009 5:00 pm 
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Mil-Surp Psychosis
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Joined: Thu Apr 20, 2006 8:47 am
Posts: 3536
Location: Tx
Age: 29
tt-33. I recently got another cz but after shooting it i had forgotten how akward and not that comfortable it was. So i traded it for a 96/11 and bought another tt-33 :o .

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 Post subject: Re: Poll TT-33 or CZ-52
PostPosted: Wed Sep 30, 2009 5:33 pm 
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Mil-Surp Shooter
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Joined: Mon Dec 03, 2007 7:45 pm
Posts: 102
Location: VA
Age: 50
Put me down for the TT-33

I own both, But as stated earlier the CZ52 is just plain awkward. But it really just boils down to what You feel comfortable with.

TJB


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 Post subject: Re: Poll TT-33 or CZ-52
PostPosted: Wed Sep 30, 2009 6:40 pm 
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Benefactor
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Joined: Mon Apr 17, 2006 10:30 pm
Posts: 433
Location: longwood, florida
Age: 63
I bought a CZ52 3 years ago. It was loud and fun to shoot but to me no comparrison with my Polish TT. I traded the CZ for a Yugo SkS. I used to get a bruised trigger finger when I shot the 52.

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 Post subject: Re: Poll TT-33 or CZ-52
PostPosted: Wed Sep 30, 2009 8:56 pm 
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Section Moderator
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Joined: Fri Dec 19, 2008 5:53 pm
Posts: 2655
Location: NE South Dakota
Age: 24
Thanks guys hear are the results so far.

TT-33 12
CZ-52 1
Undecided 1


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 Post subject: Re: Poll, TT-33 or CZ-52
PostPosted: Tue Oct 06, 2009 10:27 pm 
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Mil-Surp Collector
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Joined: Sat Apr 22, 2006 9:50 pm
Posts: 379
Location: Wapello, Iowa
Age: 39
tt 4 me :thumb:


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 Post subject: Re: Poll, TT-33 or CZ-52
PostPosted: Mon Oct 12, 2009 2:12 pm 
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Mil-Surp Collector
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Joined: Sun Aug 26, 2007 7:50 am
Posts: 440
Location: 7300ft NAZ
Age: 42
as far as chamber strength goes the tt-33 wins from what I've read... the rollers on the cz-52, and the space they fit in, cut into the thickness of the cz-52 chamber...

cut and pasted:

Measure the OD of the barrel in a CZ52 at the chamber:.590"
Measure the OD of the barrel in a Tokarev at the chamber:.640"
Measure the OD of the barrel in a CZ52 on the barrel:.468"
Measure the OD of the barrel in a Tokarev on the barrel:.494"
The Chamber ID is .390" and the grooves ID is .308" for the 7.62x25mm Tokarev cartridge.
This makes the walls in the chamber of a CZ52 .1" thick
This makes the walls in the chamber of a Tokarev .125" thick
This makes the walls in the barrel of a CZ52 .08" thick
This makes the walls in the barrel of a Tokarev .093" thick
The formula for thin wall hoop stress is S=[chamber Pressure][ID]/2[thickness of walls]
Assume 4140 steel heat treated.
If heat commercially treated and quenched 4140 steel has an ultimate maximum tension yield strength of 180ksi,
http://et.nmsu.edu/~etti/winter99/manuf ... llmer.html
Then the max chamber pressure for a CZ52 may be calculated:
Pmax[CZ52]ch = S[2][thickness or walls]/[ID]= 180ksi [2][.1"]/.390"=92,000 psi
Pmax[Tok]ch= 180ksi[2][.125"]/.39"= 115,000 psi
This must be added to the pressure capacity of the brass:
Pbrass = S[2][thickness or walls]/[ID]= 66ksi [2][.035]/[.39 -(2).035]=14kpsi
The CZ52 chamber would then fail at 106,000 psi
The Tokarev chamber would then fail at 129,000 psi
Pmax[CZ52]barrel= S[2][thickness or walls]/[ID]= 180ksi[2][.08"]/.308"=94kpsi
Pmax[Tok]barrel= S[2][thickness or walls]/[ID]= 180ksi[2][.093"]/.308"= 109kpsi
It looks like the barrels are weaker than the chambers.
It looks like the CZ52s are weaker than the Tokarevs.

end cut and paste

I have two 52s and two tt-33s...I like the tts better...but neither model shoots accurately and consistently....they're all over the place...the sight pictures sucks.....

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 Post subject: Re: Poll, TT-33 or CZ-52
PostPosted: Tue Oct 20, 2009 6:10 pm 
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Mil-Surp Owner
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Joined: Tue Jun 30, 2009 6:43 pm
Posts: 24
Age: 32
I've got both and like the TT-33 the best. I've never done better than 6" groups with the CZ-52 at 50 feet. The TT-33 I've gotten 2" groups. As good or better than the Springfield Target 1911-A1 I paid 5x as much for.


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