BR,
This is none of my buisness, I have a Dillon 450RL that I bought new 25 or so years ago new, and I have a Dillon 550 b, a Lee 1000, and the Old Herters C Press, now this is only my thoughts, If you have a single stage press, i would use that for my 45-70, I cannot imagine that you are going to shoot that much 45-70 that you need to set it up on a progressive press!
Just my 2 cents!
I sure can't wait to hear how that trap door shoots!
ACE