I twice had a problem with the BWM rams being handled by the horns.
First time just after shearing one of the young rams died. He looked sad after shearing and around 3 days later was dead. I reckoned they damaged his neck.
Second time someone was "helping" me with the sheep - grabbed a young ram by the horn, and the horn sheath just came off in his hand. Bled like mad, but put on some purple spray and it was OK but never grew back properly, so I would say, don't handle by horns.