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Arrow spine for FMJ? 29” arrow, 100 gr tip, 73# peak DW Mathews VXR 28. According to the Easton chart I would have to add 15 lbs to the overall bow weight for the 6” brace height, over 340 IBO and for shooting a finger release. Does this sound right? Just making sure I’m reading and understanding the chart right. If so, 250 spine would be what I needed? I’ve been shooting 300 spine for a while now with good results but questioning the spine choice now. Also have the Easton AL half out inserts up front (25gr). Any input? Also, any other suggestions about how I may build my next set out? Current overall weight is 505gr. Thanks
 
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