Help I need help on 10 gauge choke tube ID

[4nolz2]

I just bought a backup SXS .10 its a Churchill-well made gun.The choke tube is pictured-havent seen one like it before-I would like to get turkey chokes for it but I'm not sure where to start.Anyone seen a tube like this before? The threads are in a different location than the standard type chokes.I have 3 tubes marked IIII III and I.

[MAGGUNS]

http://www.choke-tube.com/choke_chart.asp     http://www.sportsmansguide.com/net/cb/trulock-fabarm-precision-hunter-12-gauge-choke-tube.aspx?a=496264

[4nolz2]

I dont see a 10 gauge listed there?

[Old Gobbler]

http://www.briley.com/churchill.aspx

[Old Gobbler]

http://www.gunpartscorp.com/catalog/Detail.aspx?pid=1198250B&catid=12587

[4nolz2]

wow thanks Old Gobbler! thats exactly what I needed!