Just flare the case mouth a bit more so it doesn't shave lead.
Any crimp dies can damage bullets if not adjusted properly.
I think you need to read the instructions properly.
I've reloaded thousands and thousands of .38 and .357 rounds on Lee dies over the last 25 or so years and never had a problem with anything from flush seated wadcutters in a S&W K38 to .357 max loads of 296 in a Rossi 92.
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