Per the thread title, I'm interested in the practical differences(if any) between these two molds. I've got the .44-250-K. I found a couple of threads in archives addressing this issue but they kind of wandered all over. Because the threads were somewhat old, the pictures originally posted are no longer available.
Ever since I got my FA 97, I've been looking up articles on loading for the .44 Special. Both of these molds keep coming up. I guess I should have asked if it made any difference which boolit you used the load data for. I've also got the MP .432-256 mold which is also identified as H&G 503.
I've also got several other molds for .44 caliber but they don't present the same confusion.