If your arrows are grouping good you should be fine. I usually shoot my arrows a tad toward the limber side, but Binarys are more tolerant of a soft spine that single cams.

As far as the weight? As has been noted 380 grains should make a very good Hunting Arrow.

Actually too many are shooting too light arrows. I've been there done that, and now I lean more to 6 to 7 grains per # even on my light setups

Dan