Dear all, I have managed to cut 45 Schofield brass to fit Webley .455 revolvers and found reliable and tested loading data on original Fiocchi brass, however i have noticed the Fiocchi uses small pistol primers while the chopped Schofield brass has large pistol primers. Can someone kindly guide me if there are established ratios or percentages of how much do I need to decrease the grains of powder (current sweet spot on SP primers is 3.2 grains of Vithavouri N320, safe maximum of 4.0).
I accept that I am ultimately responsible for any loss of life and limb but any advice welcome before I go 2/3rds load and try to go up that.
Thanks Beforehand
Daniel