I think I was kinda the one that started this thing, with a post on the tech forum. Where it lead me was to take a hard look at what I wanted to accomplish.

To illustrate what AC is saying, I computed the trajectory of two arrows, one a 332 grain flying at 318 fps and one a 542 grain at 252 fps. A dramatic difference. How much difference do you think there is at 30 yards?

Less than 1 inch above (mid-point) and only 1" below at 30 yards. Both arrows provide right around 75# of ke, plenty no matter how you look at it for whitetails with whatever head you want to use. As a bonus, the heavier arrow will have gads more momentum in the event of a non-perfect shot (can you say shoulder blade?).

I'm currently flinging a 332 grain arrow at +300 fps. Makes you think...