Choke question, Catma 505

[Clay Huntin' Canuck]

I have a catma 505 I use for skeet and want to upgrade the chokes to briley.
Does any one know what type/style of choke they are? I'm thinkng there Beretta mobile, definitely not browning because I've have some.
If it helps the threat pitch is metric 1.00 mm

 

[Clay Huntin' Canuck]

Found this about choke interchangeably

https://gunnersden.com/shotgun-choke-tubes/

 

[Falconflyer]

Catma's website refers to "Mobil Chokes" so I would assume they are referring to the old Beretta Mobile Choke which is a Beretta copyright. They are being used in several Turkish brand shotguns these days to reduce the cost of manufacturing their own tubes.

 

[twiki]

Mobil is correct.
Mobile is not.

I once had a set of Müller chokes that said Mobile. I contacted the company who confirmed the earliest batch(es?) had the name incorrectly laser etched onto them.

 

[stubblejumper]

Contact Briley direct.

 

[Clay Huntin' Canuck]

Mobil is correct.
Mobile is not.

I once had a set of Müller chokes that said Mobile. I contacted the company who confirmed the earliest batch(es?) had the name incorrectly laser etched onto them.

Yep meant to type mobil not mobile stupid auto spell

 

[Clay Huntin' Canuck]

Mobil is correct.
Mobile is not.

I once had a set of Müller chokes that said Mobile. I contacted the company who confirmed the earliest batch(es?) had the name incorrectly laser etched onto them.

Yep meant mobil not mobile, stupid autocorrect, that's probably what happened to them

 

[Clay Huntin' Canuck]

Well I ordered a set of beretta Mobil "victory" chokes and just my luck they don't tread in, go in a few thread and then stop dead, anyone else have this problem?
Checked the tread pitch with a gauge and it's the same. M1.OOmm

Not sure what to do I doubt I'll find a thread chase in M1.00×20

Any suggestions ?.

 

[Clay Huntin' Canuck]

All good got them in just really really tight I'm guessing huge difference in barrel tolerance is the issue

 

[Falconflyer]

I guess you won't have to worry about them coming loose!

I take it there is no apparent thread damage from forcing them.

 

[stubblejumper]

All good got them in just really really tight I'm guessing huge difference in barrel tolerance is the issue

Hopefully you used anti seize on the threads.

 

[Clay Huntin' Canuck]

Well I ordered a set of beretta Mobil "victory" chokes and just my luck they don't tread in, go in a few thread and then stop dead, anyone else have this problem?
Checked the tread pitch with a gauge and it's the same. M1.OOmm

Not sure what to do I doubt I'll find a thread chase in M1.00×20

Any suggestions ?.

Got them I'm tight isn't the right word , probably not getting them back out but that's fine.

 

[Clay Huntin' Canuck]

I guess you won't have to worry about them coming loose!

I take it there is no apparent thread damage from forcing them.

No I'm a tradesman so I know when something is cross treaded it was just really tight guessing the barrel are not quite round

 

[Falconflyer]

I've seen mobil chokes that you could notice a tight spot every 360 degrees of rotation before. I always thought it was the tube that wasn't right since other choke tubes were fine in that gun.

 

[struff55]

You should have lapped them in place wit lapping compound and not forced them