help converting to wood

[Slickhead]

Im currently shooting a 50LB Savannah LB
Its tuned with 28.75 2018's with 125 grain head

Im looking to shoot a 125 or 135 head on wood.
What spine should I order and what length should I start at ?
Im am shooting FF string

Thanks much
Im ordering Monday

[Bjorn]

The Savannah is not cut to center, but you are using a FF type string I think 55/60 would be a good choice and you can leave them long if you need to. If you are going to make the arrows get a test pack. If ready made talk to your fletcher.

[m midd]

55-60 and start at full length and tune accordingly.
I shoot 55-60s out of longbows from 53-63# with good success