A good of example of why tuning is important

[oxnam]

Check this video out:
  Warbow Shooting

When I first came across this video I thought he was aiming unbelievably high for the target distance, but then I saw the arrow flight and it all made sense.  How much energy do you think is lost with this kind of arrow flight?  A well tuned 60# would probably penetrate better than that the wild arrow from the 90#er.  

It is 90#, so I'll definately give him credit for that but at a minimum a simple nock adjustment would make a world of difference in the arrow flight.

[Night Wing]

The guy's arrows are probably quite heavy grain wise, like 900 grains and/or higher.

Also, he's probably shooting off his hand instead of a shelf like we're accustomed to.

And his release could use a little work.    

[KentuckyTJ]

Lets just hope he's not a hunter!

[oxnam]

Originally posted by Night Wing:
Also, he's probably shooting off his hand instead of a shelf like we're accustomed to.

I am pretty sure your are correct.  It does not look like the bow has a shelf.  To me it looks like the arrow is kicking way high and wobbling vertically to the target which could be caused by improper hand placement for off the hand shooting.

[Earl E. Nov...mber]

Probably doesn't have a nocking point set on his string either

[Pinelander]

Must have been the wind.      

My wrist would need an ice pack afterwards, if I did what he was doing.  

- Dave

[don_h]

His cock feather was in, probably made the wobble...   :D   ....kinda got the feeling he wasn't to happy with what was going on.

[Friend]

Nice video to engrain there are others out there.

[maineac]

He has a pretty dramatic drop on his bow arm on his release that could cause some of the drop as well.  But that is a huge amount of weight to draw back and get a super smooth release.  I would be lucky to hit a much larger target at an even closer distance if i could even get the boe back.

[Tajue17]

I shot bows off the hand and I think he's too low on his arrow mark or he's nocking too high..  if its done correctly that up and down shouldn't be there like any other bow but also couldn't tell if he was wristing the bow on release hitting the nock up,,,, he must snap alot of arrows.

I always had trouble spineing ELB's and battled the side to side nock upon release many times.

[Cyclic-Rivers]

too much FOC LOL.

[gringol]

I can't say I'm impressed.  shooting 90# badly is basically weight lifting.  I know lots of gym rats that could do that...