rcbs 357 mag SWC dies for jacket?

[WhelanLad]

hey i picked up some 3 die set from rcbs for the 357mag, they are they 18206 model, for the SWC...

can these load standard cast RN or jacketed bullets ?

is it wise to get a lee factory crimp die to go with?

 

[VICIOUS]

Sure, but a seater plug matching the bullet nose shape is always better. Lee factory crimp die or crimping at a seperate step is best.
But I have used 9 MM seating die to taper crimp 357 mag, also used 38 super auto seating crimp die for 357 mag.
Make dummey, no primer or powder pratice rounds and see what works,