I was wondering what others experience has been concerning this subject. For example, say an arrow weighing 550 grs. spined 50-55#, 30"s long with a 125 gr. point flies well from a 53# @29" Hill style longbow. How much heavier spine would be called for to shoot a 175 gr. or a 225 gr. point keeping total weight the same?
Common wisdom seems to be a 5 pound spine range change for every 25 grs. in point weight but as I experiment I am beginning to doubt it. Any help is appreciated.