To add to Mr. Petersen’s reply , add an additional 5# for broadhead and an extra 5# for every inch of arrow length over the 28″ mark .
Example : I am shooting a Montana ,45# at 28″. My draw is 27.5 and my arrow length is 29″. My broadhead is a two blade 125gn. Magnus . The arrow spine , for me , is 55/60 . Sometimes I feel that 60/65 would be better . It’s all in the shooter .:):)
Reply To: woodarrowsRobert Gilbert2017-01-15T17:28:12-07:00