Spend the money on a Taper Crimp or Profile Crimp die set. Seat as a separate stage, then taper or profile crimp only until the case mouth is straight.
High pressure rounds, Ruger Only, causes case length growth. Case length growth due to pressure is very uneven. But the roll crimp die setting on your press, is in effec head-spacing off the case mouth! Bulging the case only on the over length cases, per your die setting, not the book trim to or the gun's chamber.