Been using my Rockchucker press for 30+ years and thousands of rounds of ammunition over those years, wouldn't ever part with it. If I were doing smaller ammunition like the .223 or 5.56 I wouldn't have a problem with a Dillon 650X or larger, but...you also stated up to 300WInMag. So....either the Rockchucker or the Forester CoAx press, usually unless you can find a used on, or catch the run just right the CoAx presses are hard to come by. I definitely would stay away from the "C" presses or a turret press if you plan on loading the larger magnum cartridges because these presses tend to spring under the heavy pressure required to resize the magnum cartridges.