It is not ethical to try to shoot a deer at 200 yards away with a 30 - 30 rifle.
I think you already knew the answer - but was just looking for someone to validate the fact that you are under gunned and you want to do something that is beyond the reach of a 30 - 30 rifle.
Bull feces! If one can HIT the deer in the boiler room at 200 yds with a .30-30 the deer will NOT survive it. Don't use your lack of abilities to criticize a cartridge or another shooter who may be just fine with the combination, especially if it's scoped.