It could work. It all depends on your expectations. My brother had a bunch of 158 gr. SWC that he sized down for use in 9mm. Obviously the bullets had to be seated very deep and the powder charge reduced considerably but it did work well for the purpose of going bang and putting holes in paper. A couple of semiautos fed them reliably, they cycled properly and were accurate.

I tried heavy (158 gr. cast) bullets in my 940 to see what kind of performance I could get. I figured that since the revolver is more versatile and forgiving I should be able to get better performance. I was wrong and it didn't work out well at all. A cast bullet of 140 grs. could be outstanding in the 9mm depending on the shape and configuration. I never tried the Lee bullet so I can't comment on it specifically.

Dave Sinko