Does anyone know of a table for optimum barrel length by caliber? Specifically looking for .222 Remington (yeah I know, .222, it's the nostalgia) with 45-50 grain bullets. I plan to use IMR 3031 and maybe H 322, mid range to close to max charges. Not trying to be lazy, but I don't quit have a complete understanding of burn rates yet to figure it out on my own. From what I have read I am thinking 26". Thanks for any input.