Dillon 550 and have plenty of brass on hand.
Load the high volume cartridges by the ammo can or two and you will be making full use of the press and you rtime.
This.
You really do have to rethink how you load to get the most out of one of a progressive loader. Use any other type of press for working up loads, but once you find a keeper, get 5-10k pieces of brass and load all of them before you swap to another caliber and do the same. Otherwise, you'll spend more time converting/adjusting the press than you do loading.
Okie John
