Joe
From what I have read on the ODNR site and from talking to a few diffrent game wardens , yes the handgun is legal as back-up , as long as your not bow hunting deer and its not carried concealed .
Also there are not the regs that apply to that handgun , as there are for using one to hunt deer in gun season . basicly you can carry any haqndgun you want , 45 auto , 9mm , 357 , 22lr , you name it .
stimpy