I bought the press right from lee. (but my press is the one for 50 BMG)
This one should work for you... http://leeprecision.com/classic-cast-press.html
My Rcbs press also accepts the large dies. You just have to remove the threaded die adapter that accepts standard 7/8-14 dies.
Remove it and your press will accept the 1 1/4-12 large series dies.
Lee and RCBS used different pitches on their large dies I believe.
I think Lee is a 1.25-12 and RCBS is 1.25-14
They both use the standard 1 1/4" x 12. It is an industry standard today. Maybe Herter's or pacific might have been different back in the day, but today? Nope.



























