The Omega line from T/C has a 1:28" rate of twist. That's pretty fast, so you want to look for just about the longest bullet you can find. I've used the T/C Maxi-Balls, Barnes Bullets, and Powerbelts and they all work well in my rifle with a 1:32" twist (and all of them are legal for hunting in Colorado).
If you're lucky enough to be on private land and can leave your stand up during the off season you can tie an old piece of cloth or something of the sort to your stand. I like to use an old camo bandana that I have. That way the deer get used to the movement and eventually don't bother even looking up when there is slight movement. This may just give you the time to draw your bow or raise your gun without being detected.