I'm switching to the GR's this year. I can tell you this much, they are a better design than the Wasp Jakhammers (with the same cut) etc...

You slam 1-3/4" of head through the boiler-room of a whitetail and be prepared to get messy tracking a buck! I've had bloodtrails that were 10 ft. wide. Most deer I shot with them never made it out of sight.

I'm guessing from the video clips and much of the feedback I've heard about these heads, they will produce the same type of thing.

SHOT PLACEMENT IS EVERYTHING!