I was playing around in my Megaton house killing myself and Jericho. So I placed some mines and blew them up and quickly reloaded my save file. After it reloaded, I got 80 exp. So, I went out and took my Fat Man and went to the bomb and killed myself and then reloaded my auto save file. I got 110 exp. The thing is, I didn't tried saving after reloading my save file so I don't know if it'll work if I do.

i was once killing... i mean i accidently discharged my fat man in town i was cleaning it and it fierd yeah thats it and i kiled some people

so when townfolks atacked me i tough well i just saved so what the hell and blew them up and me and i say after i loaded that i got xp

this is the thing you do get the xp but you get it before you die but the msg that tels you you got xp is sometimes slow when there lots of action on screen like a fatman gowing off that the msg stays on hold till the next available time frame wich would be after you load