I want to use this to prime cases for my 338 EDGE Improved I just got in. I have heard of people using this tool to prime cases for the EDGE but can't remember how they did, as Lee doesn't seem to make shell holders for Rum cases. Does any one prime Edge cases with the Lee tool or know how to make it work or am I just going to have to get the RCBS hand priming tool?
You need to take a dremel or something similar and open up the top a little, the u shaped cut above the shellholder, to allow for the RUM case being so large at the base. As was said a standard shellholder works.