Depends if you are talking about rack size or antler size.
My biggest antlered deer would be the 5 point I took with my flintlock this year. He scored in the high 50's[8D]
The largest bodied deer I've killed was my first buck, a 3 point I killed with my bow last year. He dressed out at 150 lbs.
Whoops...apparently I already posted this before and forgot about it....ohh well.