Hey guys, struggling with the 160 partitions in my 280. Been getting very good accuracy and velocity using imr 7828 and various other brands of bullets (speer 160 boat tails, hornady 162's and sierra 160 hpbt) but everything goes way bad in the accuracy dept. if I try 160 partitions (or accubonds too for that matter, was thinking my rifle might be allergic to nosler but 140 ballistic tips shoot very well). I know there are several guys on here that have had good success with 7828 and 160 partitions. Is there perhaps a magic seating depth I have not tried? The other brands can all be made to shoot under an inch but the noslers fly all over the place.