for 82% fill loads and up for 9.3X62 with h380 powder, would filler be needed? what about mag. rifle primers? and the same question for imr 4064. I am trying to decide between the two. I was going to go with imr4320, but someone on here wrote that it can get unexpected pressure spikes near maximum loads. so if that true I want to stay away from it. thanks a lot-Travis