A 5575 Goldtip shaft is underspined at anything much over 64 lbs, with an average 28-29 inch draw, 85-100 grain head.
A heavier head would only add to your woes, but you should get by with a well tuned bow at 65lbs and a 100 grain or less head.
Shooting 69-70 lbs would probably require moving up to the 7595 Goldtip shaft for consistant arrow flight.
Last edited by michiganbowbender; 08-31-2009 at 08:17 AM.
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