Another idea. Lee sells 45-60 die sets, and individual parts for them. I bought just an extra seating die body, without the stem. It has a roll crimper built in. It acts just like a 4 die set--you seat the bullet without a crimp with the original seating die raised up in the press to not crimp, which is better, then using the extra seating die body alone as a 4th crimp die. $15.00 and works like a charm. They have these in stock I believe, and you don't have to go through the process of sending them a cartridge to make up the factory crimp die. I don't see any disadvantage to doing it this way.