I shoot pretty much like Bronko to many aspects.
I research what load has worked for others and go from there.
I start at about 1/3rd up from the starting load to about 3/4 throttle.
I load 5 rounds of each going up by 1grn each time.
I start with a clean barrel fouled by 2 rnds.
I use a timer for 2 mins between each shot for that load.
I clean between each set of loads and fouled with 2 shots. Dipped nylon brush and patch soaked then dry patched.
I walk down between loads to change targets as well for time consumption.
If I find a load that looks like it may work. I go back about 1/2grn below the load and start loads in 1/4grn loads and see where the groups start to shrink and then began to open up. I then go and begin to break loads down into tenth grain increments to tweak the load for maximum accuracy.