I live in Michigan, the state that looks like a mitten. I live to hunt whitetails.
I have always used bows in the sixty to seventy pound range. I have been hunting with carbon arrows four only four years now, but hunting is out my back door, and there are lots of tags available here, so four years has given me time to try different things.
My first carbons were shot from 68 lbs and weighed in at around 520 grains. My previous arrows for that bow were hex-pine wood shafts that weighed 650 total. Even though the wood arrows were heavier by far, I got much better performance on game with the carbon. 95 percent pass thru shots with the carbon. 70 percent with the wood.
Currently, I am shooting a 63lb recurve, gold tips
55-75, that total out to just about 600 grains.
I am confident that my current set-up would be plenty for elk, moose, and even big bears. My local whitetails hardly slow my arrows down.
For me going with a lighter shaft increases bow noise too much. At thirty yards, the difference in trajectory is hardly noticeable. The trade off isn`t worth it.
I`m sure that 500 grains will still give you plenty of punch, and if your trajectory improves
without causing other problems, it may be well worth losing a little weight.