Did any of the 50 that you fired when it was warmer split?Only thing I’ve done differently is fire the second batch of 50 in much colder weather. I sized and prepped all 100 at same time after fire forming. I tumble with corn cob media and I don’t tumble to a mirror finish. I clean dirty necks with scotch brite pad. I’ll have to pull my die apart and see how much I’m squeezing the neck in morning.