The Ithica's are great guns for a treestand but dang heavy to haul around the woods.
As for yardages?????? I rolled a doe off the other hillside,later ranged it @ 325 but it took 3 shots to walk it in(one dumb deer!!) The last doe I shot with 1300 Winchester rifled slug barrel was running @ 175 yards and I hit her with 4 out of the five rounds

Only recover one slug but they apeared to have what it takes to GET-R-DONE, man they ripped through her like a helicopter!!
I still have that old 1300 Winchester even though my shoulder will never take the recoil of that magnatude ever again.
These days I much prefer the Ruger Super Red Hawk in 454 Casull. Lot easier on the shoulder, easier to carry through the woods and it likes bigger deer
Please keep us updated on your advetures with the 12 guage slug and good luck with it!!