40# bows- 10gpp?

[Alexander Traditional]

More power to ya,but I have no idea how you're going to make 340 work. I'm shooting those out of 60 and 65 pound bows.

[SS Snuffer]

Are you left handed by any chance        you never said  or I missed it

[Iowabowhunter]

Are you left handed by any chance        you never said  or I missed it

I'm right handed

[DarkTimber]

If you keep them full length and are shooting 175gr up front (point & insert) I think there's a good chance the 400s would work for you.  I don't think you'll ever make 340s work and be close to the weight you want.   

Since you know the ballpark weight range you want your arrows to end up at, just work backwards to find your shaft.    425 gr - 150gr point = 275gr - 46gr for components (insert 25gr, fletching 12gr, nock 9 gr) leaves you a 229gr raw shaft. 229 / 32" means you're looking for an arrow that weighs around 7 GPI.    That narrows your shaft choices down pretty quickly and rules out most arrows with a wood grain finish.     

You might take a look at the Black Eagle Spartan.  It's a small diameter (same dia as the Centershot) and weighs right at 7 gpi in a 400 spine.  If you want a micro diameter the Black Eagle Rampage has about the same gpi. 

   

[Iowabowhunter]

If you keep them full length and are shooting 175gr up front (point & insert) I think there's a good chance the 400s would work for you.  I don't think you'll ever make 340s work and be close to the weight you want.   

Since you know the ballpark weight range you want your arrows to end up at, just work backwards to find your shaft.    425 gr - 150gr point = 275gr - 46gr for components (insert 25gr, fletching 12gr, nock 9 gr) leaves you a 229gr raw shaft. 229 / 32" means you're looking for an arrow that weighs around 7 GPI.    That narrows your shaft choices down pretty quickly and rules out most arrows with a wood grain finish.     

You might take a look at the Black Eagle Spartan.  It's a small diameter (same dia as the Centershot) and weighs right at 7 gpi in a 400 spine.  If you want a micro diameter the Black Eagle Rampage has about the same gpi. 

   

My apologies I have been looking at numbers all day, I had intended to say the 400's were showing perfect according to the 3 Rivers page. I wonder if having the Hoyt flipper rest on is allowing me to shoot a much stiffer arrow?