Arthur P, I like that bowling ball, ping pong ball comparison.
I don't, actually. There's too big a difference between the two. Bowling balls are weighed in POUNDS, ping pong balls are weighed in......Hell, I don't know what they're weighed in.
There just isn't much weight difference between 400 and 500 grains...Enough to change things? Certainly. As much as a bowling ball and ping pong ball? No way. I understand the point though, but there's just too big a difference for it to be relevant. We're only talking totals of like 2-5 foot pounds of KE here.......I'm still going w/ lighter/faster.