While I agree that loading only for yourself is a good rule of thumb, I have, in the past, worked with a friend in order to work up a safe load for one of his handguns. Once we established that safe load, I would load his brass for him whenever he needed it... which fortunately happened to be not frequently. It was usually a box or two every few months. All I asked from him was to buy the dies, and the components, with the understanding the dies belonged to me, and I would use the components only on his loads.
Was I breaking any laws? I don't think so. Would I do it again? Probably.
I always felt that if I got to the point where I thought it was time to bury my firearms, it was actually time to pick them up..