Welcome to the Wonderful World of Roll your Own.
It is fun ... especially when you find the optimum load you have developed beats the crap out of the factory stuff, and for a fraction of the price.
My current practice load for .45 is 5.4gr W231 behind a 190gr LSWC (which I cast myself). Accurate, but not particularly hot.
As others here have written many times ...
Safety First. Work your loads up slowly and keep alert for signs you are pushing the edge.