Thanks for the help....
Like I said, last years doe was smaller - kinda scrawny really. So it must have been almost a yearling. This years doe was almost what I would call mature size. She was very healthy overall. In fact, I would sure like to know where she was feeding because that stomach was jam packed (like a football) with green leaves.
I have heard of cattle yielding about 1/4 of their weight in meat so I think I will use the 1/3 weight as an average - as long as the deer is healthy.
As for butchering my own. I would like to someday but I still feel I have a lot to learn. This deer was only my third so I am lucky to know exactly what to do just to field dress it. My brother and uncle process their own now so I guess I will have to get together with one of them to see how it goes.
THANKS AGAIN!