flounder33
Shoot Art, I am not a Barnes expert other than knowing they are a super bullet. Since i do not know for sure what the Barnes Expander is for sure, like weight and nose construction - I will tell you that 85 grains of T7 will be very effective out to a given range - probably 100 and some beyond. If you are using T7-3f with that short barrel you will even pick up some additional velocity. My only concern would be a shota close range and a zip through(and I am assuming you are hunting deer)- but with the Barnes reputation - I can not imagine it would be a problem - I know one of my Nosler 260's or either of the Gold Dots (250 or 300) would also work.
My personal beleif good planning on your part and good hunting...