Yes, I get 7 in the mag, 1 in the chamber
What shotgun is that? The typical Rem 870 and Moss 500 tubes hold four sans plug.
This guy says five in the pipe after the plug removal, so 6 total.
Mossberg 500 plug removal
https://www.youtube.com/watch?v=mIuQOsoav-A
I don’t hunt, so...