u/InevitableFit1559

I have loaded pistol rounds for years on my Dillon 650. (9mm, .38/.357, .44 spec/.44 mag, .45LC). Decided to get into loading for .223. I am used to the case mouth being flared a bit to seat the bullets on pistol cases. After watching the Dillon tutorial to set up rifle dies, I can’t place a .223 on top of a casing without it falling off as I raise the shell plate to the seating die. Does the mouth of a rifle case get flared at all? I am using 53gr flat based bullets. I can see that boat tail bullets could seat a little bit when seated because of the narrower base, but the flat base just topples off the top off the case. I have to ride it into the seating die with my fingers and hope it seats straight. Am I doing it right or am I missing something. I am using a Dillon .223 die set.