blklabs
Yes you can seat and crimp in the same step and in a strait walled handgun case it will work ok , a trick that i have learned for the seater is to cut a peice of cardboard fron a notebook back that is the same size as the seater plug and put it in the seating die , works as a pad to keep the seater from cutting into the cast bullet .
You will have to back off the seat plug just a tad to make up for the filler . and you can call RCBS and they will send you a diffrent plug , just be sure to tell them what style bullet you are using .
stimpy