I tried out a few loads with 4350 last night and was really happy. I used 74.5gr and CCI magnum primers in my sako A7 300wsm and shot cloverleafs in 4 of 5 groups at 110yrds. I guess there is no point in tring to tighten that up. BTW I am shotting 180gr Accubonds.
Are you sure it wasn't 64.5 gr, 74.5 gr won't even fit in the case last I checked?