OK so it isn't very traditional, but I'm looking at getting allys for the AFB for shooting target. I know it's not a
GNAS class but there are a few of us shooting assorted types of barebow at the club and I'm getting annoyed trying to shoot good target scores using arrows that are more and more bent (and often being replaced) from field.
I'm looking at X7 Eclipse or Cobalt. But oddly enough

there's no AFB section in the spine charts. I shoot a 40lb Viper deluxe and want 29" arrows. What spine do I want?