I am reloading on a Dillon 550C. I am asking this question because I was told that the only part that needs changing in order to reload .300 BO on a .223 setup is the Powder funnel. Change the powder funnel on station 2 over to a .30 cal funnel and you are off to the races. Does this theory hold water in practice? A .22 and a .30 caliber bullet, obviously, have different circumferences. So I am wondering about resizing/bullet seating/bullet crimping. And as I type this, and I reread it, it makes no sense to me.