I have 100 winchester hornet cases new unprimed and 88 C225-55-RF Bator SO GC as cast weight of 43.5 grains. The boolits are cast from an alloy of 37% tin and 63% lead. (I know that is a waste of tin but I have about 800 or more pounds of that alloy.) and besides it does not take very much for the Bators.
I have available Bullseye, Unique, IMR Hi-Skor 700X, HP-38, W-231 and others. I hope that gas checks won't be needed.
What is best a long pressure curve or a short one?
Before cast boolits I just loaded J-words to normal Hornet velocities and lost a few to splits in the neck or shoulder. These however were previously fired cases.
I am open to all suggestions.
Thanks to all who respond.