ORIGINAL: Arthur P
The lighter you go in draw weight/kinetic energy, the more I think you must rely on momentum and arrow weight to get the job done. Don't even consider going less than 400 grains for hunting arrows. At 20 yards max, speed is a non-issue. It's far more important to have a QUIET, accurate arrow than a speedy one.
I've got to agree with Arthur on this one. Wendy is shooting the Beman Max4 with a 100 grain G5 Montec at 25" and 50#. The hardest problem I'm having with her is emphasizing the importance of keeping them sharp. (She keeps shooting her hunting arrows at the target when I'm not around then putting them back in her quiver!)