I'll keep your recommendation in mind! I'll stick to the neck-sizing for now(as I've read opinions that say it's fine to just neck-size) and try not to reload the cases too many times before discarding.
Your reasoning seems coherent though, I might pick up another tool if I come by one for cheap.
I'll try using finer increments next time, the 44.0 load will do for now. I should also shoot 3-4 5-round groups with each charge rather than one 4-5 round group with each charge.