Test shot both weights. Got a couple friends who shoot them.
The 5.5 gr ones are a little too light and fragile for my taste. I see those guys break them way too often in practice. The 6.2 gr ones don't seem to be a problem, and you can get 5 grs/lb without frontloading too much. I'm still thinking about getting a dozen and putting them through the works. I like a fast arrow, and would like to shoot a hundred gr point while still staying as close to 5 gr/lb for hunting.
I would say get the straightest (most expensive, of course) 6.2 grain ones and go for it. If you go too light, too far below the magic 5 gr/lb number, you feel it in the shot, so go up a bit on the weight until you don't get that "dry fire" feel to the shot. I feel it around 4.6 gr/lb., so I stay around 4.9-5.0 myself all year with no problems. Having a hundred on the end would be great if I could keep it to 5gr/lb.
My friends get about 30 FPS increases with them, because of the ultralight weight only. That is the only reason they are so fast. They shoot Elite bows and have no problems with the equipment blowing up or feeling funny.
As for the Ad, who shoots a 450 grain aluminum arrow anyway these days?
Last edited by Sniper; 06-12-2007 at 12:12 AM.