I read once that a good technique is to use a 6 to 7 grain arrow per pound of bow draw for a good deer hunting arrow. I've found this to work well for me and think it makes sense. So, that would put you at 330 grains on the light side, 385 on the heavier side, and 357 right in the middle. In the end, it's what you feel comfortable with. Just my 2 cents.[8D]