Redneck I learned to use about 10 grains total arrow weight per pound of draw at your draw length.

But don't take my word for it. Have you joined the Leatherwall forum at Stickbow.com or Trad Gang? HNI is great, but there are lots of trad only shooters on these sites.

http://leatherwall.bowsite.com/tf/lw/threadsx2.cfm

http://tradgang.com/cgi-bin/ultimatebb.cgi