i glue on a 357 case, then crossdrill through the case, and epoxy in a a short piece of high tensile smooth fencing wire, the type they use for electric fencing- makes an awesome judo type point.
i put the case and the wire onto my grain scale, and cut little tiny bits of lead with a pair of sidecutters, until i get to my desired weight, (125gr), put the lead in the case, and stand the case on one of my wifes electric stove plates ( when she is at work!!!!!!!!!)
the lead melts real quick, take the HOT case off and stand it on a scrap of wood, until cool.
glue to the shaft, then cross drill and epoxy the wire.
works really well.
g'luck
wayne