I'm sure this is an old question but I can't find it in a search. Has anyone used a drill and a patch jag to open up their sizing die? What did you use for abrasive? I just used some Remington X40 bore cleaner but wonder if something else would work better. I want to go from .358 to .359 for my 35 Rem. I know RD sell them but thought I try to make mine bigger.
Thanks