ORIGINAL: drockw
After shooting at a certain distance, a heavier arrow would surpass a lighter arrow in distance traveled b/c the weight of the lighter arrow enables the air resistance to slow it down at a more rapid pace. The heavier arrow will continue to hold momentum, thus, it will continue to travel at a greater distance. So essentially at a distance of say... 70-80 yds, an arrow with 30gr. more weight, might actually have less drop for that ten yards than the lighter arrow. I could probably figure all of this out but I already have enough math to do everyday

All of this is subjective to everything of course but physics says, what i explained is right

Derek
I knew that the heavier arrow would keep it's speed longer, but what I am interested in finding out is at what distance the lighter arrow has actually fallen more than a heavy arrow. I'll slap a 500 grain fatty together and see what happens at 50, 60 70, 80, 90, and 100 yards. If it is higher, I will be switching. Based upon my findings, I may or may not switch. As a science guy, this is kinda my thing. I just have never tried it. I will probably shoot my light arrows for 3D because it is a little more forgiving if I misjudge distance. At least on the shots less than 40 yards, which is most of them.