I too remember the post from some time back about cutting out the center of the crimp, for functioning through the short ported gun. I do not recall the details enough to provide how he did it, but as I recall it would certainly be a far cry above & beyond grinding off the rim on a belt sander. As he did it I don't think it would affect the crimp strength that much as the base of the crimp was unaffected, only ¼" of the end was blown away. Grinding the rim would lose closer to ½" in length & virtually destroy all crimp strength. Where re-loading is practible the former method would leave a case perfectly adaptable for a top wad & Hardin crimp on the re-load.
Miller
