PowderKeg
Member
Has anyone noticed a slight OAL length change when using a Lee FCD? I'm loading up some 10mm lead 180gr truncated cone bullets from National Bullet for my S&W 610 revolver. The bullets were seated to 1.258 - 1.260" with a Hornady die to just close the flare, then run through the Lee FCD to crimp. After crimping the OAL is 1.265 - 1.267". That's not much of an increase, and not something I'm worried about with the revolver, but I'm curious why the OAL would consistently increase like that.