All AH's (17,20,22) headspace off the neck. Keep a crush fit and you won't have brass problems, also annealing after about the 4th or 5th firing.
Get 22 Hornet brass, anneal, fire form, resize, don't push the shoulder back, load and shoot. As long as you keep the headspace tight you can hot rod it and not have problems with head separation. Split necks are more common.