Tigg, 2 or 3 reloads before the primer pocket gets to large. I talked with some other guys that reload for the FA`s 353 and they recommend using a new shell only one time for the high pressure load and then to use them for normal 38 and 357 loads.
The max load Taffin recommended using AA #9 and the 180gr XTP was to much and blew the primer. Another FA`s 353 reloader from the mid west came up with a good load using another powder that worked fine in my gun. I`am working with the 180gr partitions running a second cannalure like the XTP`s.