My experience; The Lee book ,so far as I know, is a collection of data from other sources. The sources are not cited in my edition. Under those circumstance load differences show up. I regularly recheck data from several sources to level out data anyway. The Lee books are good resources. I have to accept how these books are put together. The way the Lee book is put together aggravates the problems with data described in Post #4.
Added: My usual target load is my own cast solid base wadcutter with 3 grs. of BE. Bullets are cast using the Lyman 358495 mold. I shoot two 357 Magnum handguns with WC loads in 38 Special cases. I find these loads in 38 Special cases work very well in the magnums. I don't really see, personally, the need to load target loads using 357 Magnum cases. YMMV
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