How about simply seating those 200gr.SWC's cutting edge flush with the case. Taper crimp at .469-.470 and be done with it. If these clipped rounds don't drop in as smoothly as you like, you will probably have to settle for a round-nose style bullet. I generally don't think much of folks putting any roll crimp on bullets that do not have cannelures. I even use a Redding taper crimp die to crimp 148gr HBWC's for bullseye shooting in a K-38. I get into these debates with other bullseye shooters that use a "light" roll crimp for their HBWC rounds. I maintain: NO CANNELURE.......NO ROLL CRIMP!...........all this does in a low velocity, soft lead target load is deform the bullet. Guess who holds the local club record in the monthly Harry Reeves match?