My hornady .44 Mag carbide dies resize just enough to not shave lead when the bullet is pressed in, I have found no need to expand the mouth.....same as my RCBS Carbide .41 Mag dies.....I have a 357PD and have ran hundreds of rounds pushing 210s at over 1200 and I have not had the bullet jump crimp.....I have found little reason to ever use an expander.....decent roll crip and no issues

I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
-Thomas Jefferson