RE: Your comfort range?
Amen, Mike!!
It's all about getting close in bowhunting, and I soundly second the rifle comment, too.
Too many people forget all the variables introduced at shooting at live animals -- and most importantly, by the animal itsel. I can keep all my arrows in a softball at 50 yards, but that doesn't mean I'm launching an arrow at one from that distance.
By the time it takes my arrow to get there (out of my Allegiance, no less -- one of today's hardest-shooting bows), a deer can take a step and almost two. I've went from having a perfect behind-the-shoulder hit to possibly a gutshot. One results in an animal down in less than five seconds; the other result means hours and hours of waiting and tracking.