Step number 1: Anneal all your brass.
Step #2: Lube and run thru your sizing steps.
Step #3: Anneal again just before fire forming.
Step #4: Load up 10-30 rounds to your main/
fireform charge, and fire them into target of choice.
Step #5: Load up those same 10-30 rounds, to your test/
full load and fire into target of your choice. If no neck splits...Good, repeat all steps above.
If you get any neck splits after step #5, you should anneal all your brass again after fire forming (step #4.)
