How many firerings can you excpect out of cases before they become to week to use or can start expecting problems? I do not load my load all that hot --300wm --223 Secound semi dumb question. I was sizing some 300wm and i had three cases come out that had the slightest little indents around shoulder. Should i pich them or loadem. The indents are pretty slight i felt them and then had to look pretty close to see them. Oh another question just poped into mind what is fire forming? Sorry about my ignorance.