I‘ve been looking around and as far as I can tell red bag and charge 8 are not the same thing. It looks to me that red bag is labelled as charge 7 even though it is one big bag. Charge 8 seems to be, again, one big bag but with different characteristics from red bag. Can anyone clear this up for me. I am asking because I will be teaching a lesson on propellant for a Det 2i/c course that includes 155mm propellant. As a reserve, I have very little experience with the M109. Any information would be greatly appreciated. Thank you.