I am brand new to this forum and I posted this topic in the wrong area originally so I copied it hear to see if I can get some help.
Hello, I am fairly new to traditional. I purchased my first long bow a few months ago, Omega Imperial, and am having real trouble selecting the correct spine wood arrows. I have a 64" R/D 40lb@28" longbow. My draw length is 28.5 the bow is cut to center and I have a 1/8 leather side plate. I also have a fastflight string. Lastly I shoot split finger. Okay, I purchased a set of Cedar 50-55 arrows and tried to bare shaft with no luck. I have since learned that this was a mistake trying to bare shaft as a beginner. I since then purchased a set of GT 500 full length with 125 tips and shot them with great success for a few months, my groups are real good at 15 yards and pretty good at 20. I eventually tried to bare shaft test these and found that I needed to trim 2 inches off to get the bare shafts to fly straight. Desperate to try wood arrows again I ordered a test kit of Douglas Firs starting with 45-50 and ending with 55-60. I fletched two of each weight and bareshaft the other two. All of my bare shafts show nock left (week). I trimmed the 55-60 down to 29" and they still fly nock left, not quite as bad as the others but still really nock left. According to Stu Millers Calculator the 55-60 at 30" should be perfect for me. I assume either my form is terrible or I need even stiffer shafts. I understand that maybe I need to improve more before I bareshaft and I am okay with this however I would at least like to have a good starting point before I buy another set of wood arrows. I was told to just fletch them all and see which weight flies best but the all fly straight with fletching so I am confused. I really want to end up shooting wood arrows but they seem much harder to tune so far. Any help would be truly appreciated. Sorry for the long post, I guess what I am looking for is what spine should be good for me according to my specs.