Free: Contests & Raffles.
Bottom line is, he is not forming a .280 AI. He is forming a 280 RCBS Improved. They are not to the same spec, two different cartridges. One would have to look up a chamber/case print to confirm if the shoulder Juntion is being moved forward when formed or if the shoulder angle and slight case taper are the only changes upon fire forming.If I recal correctly, I think the only difference is shoulder angle. Shot and owned allot of wildcats. Started with a 25-284, 27 years ago.😉
I could see that with a radical dimensional change such as moving the shoulder forward as in a full wildcat, but the joy in an Ackley is you only change taper and shoulder angle, easily accomplished by just shooting them. You still need a die set to reload, so no saving in components. Cost for the " Hydraulic" (not hydrolic) starts at $175, but is not needed, and the time consumption of drying the case if water is used, or removing residue if an oil is used, well, a whole lot of extra work and cost for a problem that isn't there. Just shoot them factory and reload them wildcat...too simple!