The Dillon 550 is the best of both worlds.
It can be used as a progressive, partial progressive or a single stage press.
Mine is 23 years old and probably has 160k plus round through it.
I use it for precision stuff now, leaving the high volume rounds to a Dillon 650 and an even older Dillon rl1050 which has been making ammo since the mid 1980s.
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