Heck, be glad you can get +/- .5 grains with IMR 4350!! I can't get that good with 55 grains!! Your best bet with a long extruded powderwould be to set the powder measure about 2 or 3 grains below what you want, throw the charge, and then trickle in the remaining two or three grains. I just don't think there is a powder measure out there that will throw an extruded powder to within +/- .1 grain.