Straightarrow is giving you the real skinny on this stuff. No myths or legends, just straight facts.
Another arrow you might consider, since I doubt you'll be able to find any small diameter aluminums that are also lightweight and will alsospine out properlyfor your bow, is Carbon Express Terminator Select. Same diameter as ICS carbons. They are more durable than any ICS carbon I've tried. They'restraighter andmore consistent in spine and weight than any ICS carbon in the same price range. They also carry plenty of mass for good penetration, but not so much that they'll kill your trajectory.
Head over to
www.bowjackson.com You'll find a lot of good tools for calculating arrow weight and FOC, and a good ballistics program where you can make up hypothetical arrows and see what they'll do downrange. Pay no attention to the arrow drop figures, because arrow drop is not the same as trajectory, and trajectory is what you're interested in.
Unfortunately, the link to the trajectory calculator on his site doesn't work any more, but I played with that program A LOT. I learned that the difference in midrange trajectory between a 500 gn @ 250 fps arrow and a 350 gn @ 300 fps arrow, sighted in at 30 yards, isabout an inch. Negligible.So, don't worry too much about ramping up your arrow speedfor a hunting bow. Leave that to the 3D crowd.