I want to start shooting wood arrows out of my longbow. Right now I shoot 3555 with 50 grain insert 125to 150 points cut 31.5. I draw 30.5. The bow is center cut 40@28 scales 47@30.5 for me. Never shot a wood arrow. What spine range should I try? Spine calc says 65#. Thanks all

If you want to shoot that same amount of weight up front 175-200 with the insert you will need a 65 spine. If you shoot 125-150 a 55-60 spine should work

BTW, the 3555's spine at about 60 on a spine tester.  That said, I like the 55-60 recommendation.

I shoot about the same set up as you do concerning carbon arrows.  My bows really like a 55-60 spine in woods.  With my cedars I'm shooting 125 gr. field points and broadheads.  That works well.

Bernie

Larry. Good call. Just spined some 3555. The ACTUAL conversion is between 60-65.

Excellent guys thank you very much.

You didn't say what type of longbow you shoot...the design does matter.  If it's a hybrid R/D design and you plan to hunt with it you might want to stay on the higher end for spine, as broadheads tend to like a little more spine than target points.  So 60-65 may be a little better fit.  Best choice, try both 55-60 and 60-65 and see what works.

Ooops, I missed that your bow is cut to center.  So with your longer draw length I'd guess that 60-65 whould be in the ballpark.  Bare shaft testing can tell you for sure.