Re: Case % fill ?
YOu can use fillers and I have played with them a bit in some of my really large AM wildcats with reduced loads just for testing sake. I would not use corn meal or anything similiar. The reason is because they are combustable and will increase chamber pressures. I would have never thought this until I tried it.
Dycron filler works very well. Same stuff they use as buffer on magnum shotgun shells. It is not combustable and is very light for volume as well.
Still, its best to just use a proper burn rate powder to get 80 to 90% load density in my opinion.
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