i only use my moisture meter on occasion when i expose new wood on a bow im working on.
to really gauge how much moisture is in your stave you have to weigh it.
go buy a digital kitchen scale, and you'll never go back to poking holes in your wood.
under my bed i have a bunch of roughed out bows. i weigh them periodically and write the weight right on the bow.
every week or 2 i pull them out and weigh them all again.
once they havent dropped any weight for a week i know they should be good.
i live is a pretty wet environment, and cut all my own wood so i found this to be the best way to ensure id never work wood that wasnt ready to bend.
you live in a dry climate, so wood drying goes much quicker for you