Some pre-info from the ADI website...
Take special care when working up trial loads with slow burning powders in large calibre cartridges. Light loads in some calibres may produce occasional dangerously high pressures. It is suggested that minimum loads in large calibre cartridges should not be reduced below about 75% case capacity.
From other reading, if I understand the risk right it's because if a case is full as soon as powder's burning it's pushing the bullet down the barrel and the pressure is on the way out the whole time.
With too much room in the case the problem is the powder detonates inside the brass and hits the stationery bullet so there is a spike before it beats the friction holding the bullet in place.
Right?
So the question is, if you had a case at 65% full and filled the remainded with something suitable to fill the space and make the case capacity 100% does that address the safety problem?
I haven't started reloading yet. I'm just doing research for some low recoil loads.
Thanks.