You're off to a great start. When making up loads (and this is just me), I'll start off making 5rnds on the low end of the powder weight and increase by 0.5gn to the max recommended. Instead of 5rnds, I'll make up 10rnds with a load around the middle powder weight. The extra 5rnds is what I'll use to sight in the rifle for that particular powder/bullet combo. When I'm shooting, I'll start paying closer attention to the hotter loads to see if there are any high-pressure signs. If I do see any signs, then that's it for that batch of ammo. The remaining hot rounds get pulled apart when I get back home.
If I find a bullet/powder weight combo that groups best, I'll make up another 10-15rnds with that weight to see if it's repeatable/consistent. If so, then I'll start fine tuning going 0.3+/- grains on either side of that powder weight to see if I can improve on the groupings.
Finding the optical bullet/powder combo is the end goal but all the experimenting in between gets you shooting lots. Some folks just want THE end result, I like the journey part.