Well, you did the same thing I did starting out. But I regretted it. I found a load I liked, and had to disassemble the rest. I knew back then I wanted a partition to work for me. So I gave it a try, then changed powder, gave it a try.

for each bullet combo, you need to start out 10% below max value. They all can behave differently. I have taken a leap of faith with large capacity cases and moved in 2gr increments. See if anything is promising. But I had alot of experience with that particular firearms and knew they generally didnt' build up pressure very fast. Also has experience with the bullets and knew how they usually build up pressure. There are a few bullets to be careful with, barnes, anything barnes, failsafes, TBBC, Scirrocos.

The problem with all those loads, is usually I become fatigued after 30 rounds of shooting from most guns. Not the kick so much as mental concentration goes down, and you start making judgement calls later in the day when you tired. Also, make sure you clean all the copper/fouling out when changing to a different bullet/load, so you have a unbiased opinion.

I myself, usually load up 6 of each load with the same bullet. I shoot a group of 3 for each load at 100 yards. I then use the other 3 for each load for 200-300 yards. If my results match I know I have something to work with.