Even with a rifle, if you don't see the animal collapse in it's tracks, you should back out and let it expire.
Adrenaline can pump an animal up enough to run it into the next county.
Unlike humans, animals are incredibly tough.
I stayed hidden and watched my Arizona bull for what seemed like an eternity before it died even though the arrow completley penetrated his heart lung area.

Congrats Salty!
Sure is a feeling of accomplishment doin it with archery gear!
Good Job!