RE: How much speed needed to open up?
Thanks, guys. I was kinda thinking the same thing - although it appears that the Rage expandables start opening up with very little resistance - like going through a piece of cardboard will do it. I have my son's bow shooting pretty well right now with the G5 Montec, but was entertaining the idea of the Rage. Right now, I'm planning on using them for deer in my ProTec; and using theMontec on elk.
Assuming it doesn't bleed off much energy to open up the Rage, however; how much less is it going to penetrate than the Montec? The Rage is technically a COC head and two large blades may not have much more resistance going through an animal than three medium blades. Just a thought . . . . .