I am using the XL650 to reload .223 Rem using CCI primers, W748 powder, and 55gr HPBT. I am reloading once fired Lake City brass from a contractors range. I have been having problems with cases getting stuck in the chamber of my AR15 M-4 Type. I check each completed casing with the Dillon Case Guage, and no problem. I clean my weapon methodically. The extractor is in good shape and has good tension. I am wondering if there may be a problem with my resizer die that I am missing. Please respond with any information that may be helpful. Thanks.......