Il woods -- can't see that far
My longest shot -- was a pronghorn at around 100 yds
WT deer in IA -- 40 yds w/ a muzzle loader
WT deer in IL -- longest was 45 yds, shortest 15 yds. Muzzle loader and shotgun slugs.
Farther away than 50 yds on my buddies property and you might be able to see that it is a deer, but too many trees to see the whole thing.