Bulbous handle

[ibehiking]

Big Country;
  I would key in on the bare shafts "fly fine" but shafts with feathers go left. If "fly fine" means the bare shafts go where you are looking then it says everything is working right, but the addtition of feathers make the arrow go left.

I agree with Don S and suggest you work with the arrows. Try more point weight, an insert or longer arrows. If they eventually go where you look, or even start to go to the right, then you will know it is a spine issue.

The key distinction is "bare shafts fly fine, feathered shafts fly to the left".What do feathers do that could cause the difference? It would seem the two possibilities are;
  1)feathers increase the spine,
  2)feathers are causing some type of interference.

I hope you can work this out.

Jeff

[bigcountry]

Hmm, not sure about that.  I have been bareshaft tuning/paper tuning for 25 years.  Its treated me well. 90% of the time or more, after bareshaft tuning, broadheads also hit same POI.  To me, thats tuned.  Both fletched and bareshaft have same POI.

Besides, not sure I could go much lower than 1816's or 40lb.  Never even heard of folks going down below that for a 57lb bow shooting 165fps for 9gpp.