Good point Mobo, a 400 spine would be closer to what I'd be looking for and push you more towards the 390 range. My beman 400's weigh in at 385 with 100 grain tips.

64#x 5 grains per pound= 320 total (that would be minimum).
60# x 5 grain per pound= 300 total (minimum at 60)

If your bow is, quiet, shooting and grouping well at the ranges you plan to hunt with an arrow that is above 320 grains total then you are ready to hunt as is.

Does hoyt recommend 6 grains per pound? if so that would put you at 384 at your current draw weight and 360 if you turn it down to 60.

If you are currently underspined (the arrow flight would/should tell you that) turning it down to 60 would likely ease you into the upper ranges of the correct spine for that arrow. Once again arrow flight is the final judge on correct arrow spine.

BTW, read my signiature. I just saw your post & thought I'd try to help. There are many more on this message board with more knowledge than I , I'm just another bowhunter. Weigh your arrows at the pro-shop and go with what they say. Your bow may be just fine as it is.

Have fun at the pro shop and bring more money than you plan on spending, I always bring home a little more than I planned on going for!