I did some experimenting with my new GrizzlyStik arrows I got in the mail the other day. All I can say is WOW. These things hit like a ton of bricks. They shoot just like my axis 340's at 20 yards and they really lay down quite a whollop. They penetrate further than any other arrow I have used. The shaft is tapered and built with e.f.o.c extreme front of center. On top of that the arrows are built with 70 grain brass inserts. All I can say is they fly like DARTS!!!!! Totally awesome arrows and worth every penny. Yes they are priced a little high at 100 bucks a half dozen but they shoot awesome!