Chippin, you elude to a couple discussion points, point weight and point size. Let's deal with the size first.
Most states have a legal width limit and that is usually around 7/8- 1". Mine hover around 1" by 3" long. While this size may seem on the large side, nobody says that about a steel point. My personal opinion is that long and narrow has less friction than short and narrow. Moreover any wind planing is usually minimal at the slower speeds and hunting distances common to self bow hunting.
Weight: my arrows are currently fronted with 145 grn field points and they hit what I'm looking at. Wouldn't make any sense to reduce to 50 grn, cause I wouldn't be hitting what I was looking at any longer.
I have only killed a handful of deer with my self gear, and I admit there's probably holes in my game. I also realize there are lotsa folks in that "bird point" faction that figure my stuff is just too big. I just haven't proved it out that way so I guess I'm still gatherin data. I sure don't mind the discussion, but so far nothing has been convincing yet.