I'm the same way when testing loads, I don't use the chrony till I find my load and then it's just so I have something to enter in my ballistics program. Faster is rarely more accurate, I'd rather dial a tight group up a few more clicks than have a flatter trajectory on a loose group.
I use range buddy as well, seems to work pretty good, definitely easier than using the digital calipers and then doing math
Nice shooting, that may tighten up a little when it isn't raining. You're on your way to the 1moa black rifle challenge