It sounds like the case was bulged. If the COAL is fine and the round didn\’t chamber without bashing the back of the slide, the case was bulged. Be sure to check each case after you size them in a Wilson case gauge. If the empty case won\’t drop in flush with the gauge and drop out, the case is bulged and won\’t chamber in a normal to tight barrel chamber. It is usually referred as the \”Glock bulge\” because Glock chambers are typically not fully supported and will cause a bulge on the fired case near the case head. You can search the internet for the most common ways to get rid of the bulge in a case. I use the Lee bulge buster. I may get 10 bulged cases out of 100 from the range brass I pick up. A bulged case round will not chamber in my Springfield 1911, it will do exactly as you explained.