I'm loading 180 gr LRNGC using a light charge of BLC-2 powder. This leaves large volume of unfilled space in the cartridge. Sometimes when I fire these, I get a delayed ignition like the powder isn't near the primer. If I "top off" the brass with corn meal before seating the bullet like black powder shooters do, will I get a more consistent ignition? Will the corn meal increase the chamber pressure or is it inert as far as comustion goes? Don't want to blow up my 112 year old rifle