Had a 300RUM case get stuck last night. Arrggghhhh! Having been down that road a few times before, here's how I handle it: Tools: dent puller, #7 drill, 10-32UNF Tap, 10-32 x 1" screw 1) Back out the decapper rod. 2) Drill out the flash hole & tap. 3) Remove sheet metal screw from dent puller collar & replace with 10-32 machine screw. 4) Screw assembly into flash hole 5) mount die in a hole where you can get leverage for the ram. Here I'm using a drill press stage. 6) screw it all together and go to work. Finished.