"A friend has started using a Lee FCD and Oh boy has been crimping them!!"
Interesting thing reloading is most of it's adjustable and that includes the crimp, so don't blame the tool if the crimped bullets look like those in Slamfire's excellant photo showing abusive levels of crimping. Many of us consider Lee's FCD dies to the very best available but they aren't fool proof. (Not much is!
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