Target species will be
Roe deer: 2'6" at the shoulder and 35-75lb live weight
ReevesMuntjac: 1'8" at the shoulder and 20-40lb live weight
Chinese Water Deer: 18-22" at the shoulder, 20-30lb live weight
For the latter two (and smaller roe deer), I'd worry about destroying the animal in the process of killing it ..... but then again, I hunt deer in order to eat them ....
A light bullet at 3K f/sec will have you endlessly picking bullet and bone fragments out of your tiny steaks and chops .....