Ok I did a search and couldn't find anything on the 357 max using the 223 basic brass from starline, . I have a Steven's model 200 in 223 CF that I would love to change to 357 maximum rimless has anybody done this ? With savage now offering the wolverine in the 450 bushmaster using there 110 action I seen no reason why the 223 basic could not be used to build a rimless Max. Can anyone at least point me somewhere that is attempting this. It has to be feasible.. thank u for your time.