I am just getting started loading .223. I bought some factory rounds which I shot. I am getting set up to reload that brass. I am inspecting the cases and I measured them for case length. The vast majority are measuring less then the 1.76 inches that my reloading manual calls for. I am assuming that will still be acceptable? Most of them are measuring in the 1.748 to 1.755 range. Just want to check on what a minimum tolerance would be before the cases would be unsafe to reload. Thanks for any input!