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 Post subject: Need help with choke markings on a cz/huglo
PostPosted: Sun May 06, 2018 11:03 am 
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Joined: Mon Mar 27, 2006 6:14 pm
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I have a 410 cz/huglo with fixed chokes that I got for my kids to shoot. It is an over under.

One barrel is marked 0000 and the other barrel is marked 000.

Can you tell me what choke these marks indicate?




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 Post subject: Re: Need help with choke markings on a cz/huglo
PostPosted: Sun May 06, 2018 11:09 am 
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Mostly likely, **** = IC; *** = M

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 Post subject: Re: Need help with choke markings on a cz/huglo
PostPosted: Sun May 06, 2018 11:22 am 
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I bought a universal choke gauge through Shotgun Sports Magazine, which covers 12/16/20/28 ans .410 measurements, for just this time of situation. Good way to also check how close the ones you think you know, really are.

Bob

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 Post subject: Re: Need help with choke markings on a cz/huglo
PostPosted: Sun May 06, 2018 7:14 pm 
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According to the CZ-USA website, the Drake in .410 has mod and IC chokes.

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 Post subject: Re: Need help with choke markings on a cz/huglo
PostPosted: Sun May 06, 2018 7:18 pm 
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Joined: Mon Mar 27, 2006 6:14 pm
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This is an older redhead made by huglo


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 Post subject: Re: Need help with choke markings on a cz/huglo
PostPosted: Mon May 07, 2018 8:33 am 
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egraham wrote:
This is an older redhead made by huglo


Redheads in .410 were also IC/Mod

0000 is IC, 000 is Mod - those are pretty standard choke markings

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USAF 1969-1991 (Ret)
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Gig 'Em Aggies!
Boosting the numbers with every post

Thousands of years ago, cats were worshiped as gods. Cats have never forgotten this.


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 Post subject: Re: Need help with choke markings on a cz/huglo
PostPosted: Mon May 07, 2018 9:10 am 
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My .410 Ringneck was supposed to be IC/Mod also, but measurements with my bore gauge setup like Bob referenced above revealed the left barrel had over .040" constriction. I can't find that on any choke chart, but must be some sort of super tight turkey choke. I just got my .410 barrels back from Briley with a set of Thinwall chokes they installed. It patterns a lot better now and they also corrected a slight barrel regulation problem while installing the chokes. I got a 16 ga Ringneck that both barrels were .007" constriction, or IC/IC. I've found Huglu fixed choke markings to be somewhat unreliable, however, their screw in chokes are fairly good although they can be a half step off due to bore size variations.

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 Post subject: Re: Need help with choke markings on a cz/huglo
PostPosted: Wed May 09, 2018 4:27 pm 
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Joined: Tue Nov 14, 2017 7:28 pm
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I just purchased a CZ O/U shotgun. The choke tubes were marked with cuts in the top like this "I". There are 5 tubes so they were marked I, II, III, IIII and IIIII. It took some investigation but it turns out that this marking schema comes from English shotguns of the past that were marked on the barrels with 1 through 5 hearts, circles are an * to tell you which fixed choke that barrel had. In mind it's backwards (full should be 5 and cylinder = 1) but here's what each one means:

I = Full
II = IM (improved modified)
III = M (modified)
IIII = I/C (improved cylinder)
IIIII = Cylinder

So as noted above 000 is modified and 0000 is I/C (improved cylinder). Hope this helps.

R




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