IVI has very small flash holes in it's 223 brass from my experience. It stuck or bent a pile of decapping pins on me. I finally sorted all the IVI out that I had in the big bin of mixed brass and gave it to someone willing to prep it more than I was.
I appreciate all of the info. I have a s**t load of IVI and PMJ brass that I have collected over the years and I have been scared to use it since I have heard bad things about them. I use Federal, Lake City, or Winchester (Winchester most of the time) and I get great results with all 3 of these. I guess I will try sell this brass if someone wants it. I am sure there is someone out there who likes it and might want it. Thanks for the info. If anyone else has any more info, let me know....thanks.