I also wound up buying an additional set of RCBS 38/357 dies. They are resting on the same turret head. The washer was close, but not exact, for me anyway.
Most of my dies are RCBS. Most of my lead casting equipment is LEE, including the majority of my bullet molds. I like the LEE six bangers, a long difficult learning curve, but once you get it .... no problem. Aluminum bullet molds like to be at just the right temp. Not too cold and not too hot. There is a thin line between frosty bullets and bullets with no wrinkles.
I load, 9mm Luger, 38 and 40 S&W, 38 Special, 357Magnum, 45ACP, 45 Colt, 223, 300 AAC, 243 and 30-06