All the CB loads I have used so far have been slower powders with relatively full cases. This means I've been taught to never go with low case fill for fear of detonation. I'm making a start now on lower velocity loads. The Lyman Cast Bullet Handbook 3rd edition says I can use 9 grains HERCO or 6 Grains 700X as a safe starting load in my 30-30. This means case fill of less than 40% in my 30-30. All the threads I've read say fast powders are OK like this without fillers-- but I've never tried it before. Does the current thinking and experience still support those Lyman loads? Do I have to worry about raising the rifle to position the powder before firing?