your best bet would be to buy a rifled barrel and buy sabots. i am very fond of the Hornady SST sobots. But if that is not an option the remington luggers will get the job done no problem.
Just as a side point, if you have the possibility of shooting 75 yards which isn't a heck of a far shot id say you might want to do something to improve your sights. having just a bead could be quite the challenge if a deer is anything farther than 50 yards. Good luck though!!