Star Dot Invector

[trkehunr93]

Does anyone know the diameter of this choke?  Looking to use it in a Mossberg 500,  anyone with any experience with this Star Dot choke?  I have one for my 835 and love it!

[Reloader]

INV, INV+, and Rem SDs have come in around .667-.668 for me.  They work better in INV and INV+ than Rem IME. Really good in INV+ and pretty good in INV as well.