Ram the first volley or not. No ramrods used when firing, period.
Rammers stay in the pipes.
I don't know the answer to that one. Ix-nay, and no stapled cartridges dropped down the barrel, either. I haven't seen that done, but IMHO I wouldn't do it. Too messy in manoeuvres and safety. The rankers will be concentrating too much on when are they going to unfix, rather than being careful when advancing with levelled bayonets.