Could one simply repurpose .470NE brass and fire form it? I have used .470 brass for my .500NE 3" after cutting off a 1/4" with a small pipe cutter and then chamfering and deburring the case mouth. My understanding that the 500#2 has the same case head size as both the .470NE and .500NE 3", so assuming this is correct, it would be dead simple to fire form one's self a near endless supply of brass using the .470NE given that the OAL is 3 1/4" for both the 470NE and the 500#2