Congrats, Aaron, on the new levergun. Looks sweet!A max charge of H110 and a 158 gr Hornady XTP-FP. This yields 1710 fps in my Henry Big Boy carbine. Holes are cutting at 50 yards.
And, I've got a similar load (and rifle) to vonb. No complaints with the Henry!
As far as favorite loads, I have:
Hornady 158 XTP-FP over 16.5gr H110 w/WSPM primer. That bullet also works well over 14.1gr 2400 w/WSP primer. I find that the FP (flat point) version of the XTP feeds super smoothly through the Henry.
My Henry X w/Aimpoint red dot and Dead Air Ghost45 suppressor.

Shot at 100 w/SWFA 10X scope.











