anybody ever try this combo
No but I know a guy that says that is the ultimate choke in Invector threaded barrels. Shoots lead and Hevi-13 exceptionally well.
I had a old Invector stardot that I ran in a Old Win. 1200. About 4 years ago I gave it to a buddy with a 24" Moss. 500 and we did some patterning. We had the stardot, .670 Pure Gold, and a .660 Jellyhead. Out of his gun the Jellyhead did quite a bit better than both the others. The Pure Gold did the best with the FHW. We tested #6 and #7 hevi, 3"- #5 and #6 fed. Strut shot, and Win. XX 3-2-6. Out of all those the .660 Jellyhead did considerably better.