the RecTeq probes have proven to be unreliable. RecTeq has even sent a replacement for one that was way, way off they can be used for gross measurements (hand grenade cooking) but a handheld digital instant read probe gets me to the finish.
I've baked artisan bread many times.
3 c water
1.75 Tbs yeast
1.00 Tbs kosher salt
6.25 c bread flour
mix by hand and let rise covered a few hours. form into boules and bake at 400˚F for ~50 minutes