I had use of a 450 years ago, wish I had bought it. I used it as a progressive single stage.
I load a fair amount for a half dozen different 17’s,20’s and 22’s. To get the end results I desire I have not had any luck with a full progressive press. I have my old rock chucker and my coax press.
I prefer a pretty full case. When a progressive turns and hits the detent ball, it flips powder out.
YMMV
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