Speed of sound =1125 fps. 40-60 may be doable on [b]some[/] animals other than white tail deer. I shot a rabbit at 51 yds w/ a blunt once when preparing to leave a deer stand. I had watched it for 1/2 hour or so, ranged it, and still made a lucky shot.
The effective range can be stretched some on elk, moose or mulies, imho, but not white tail deer. They all deserve respect.