If you have a spare(?) .357 barrel, why not take it up a notch. I think that Reeder does a rebore in what belive think he calls a .356(?), which is a 445 case necked to a .357. You should be able to down load it to standard .357 mag or up load to some heavy hitters. Maby use a 455 carbide sizing die for full linght sizing and used B&D dies for the neck sizing and seating.