Just for curiosity, does anyone have a good guesstimate of what PSI would take to crack this home made sizer die?
I was trying to swage a .45acp case down to .412" OD for a jacket and made the inside punch to big. It just started to come through and POP!
Material is 1144 Stressproof, inside diameter of .412", outside diameter of .960", length of cylinder 1.400". From what I gather, the 1144 Stressproof has an ultimate tensile strength of 115kpsi so it would take ~43klbs to pull apart the ~.37in2 sidewall. Not sure what that all means in terms of hoop strength, pressures etc.
I'm just getting into swaging as I put together and .400Whelen and have way more time than money right now. Got some O1 on the way to make more dies.