Few options
Jesse,
Leaving Jarbidge to the south you had no real options as to route if the Owyhee townsite was your next fuel. You passed over the Bear Creek pass then the Coon Creek pass just a few miles farther south. Dunno what lake you saw before Charleston, but unlikely it was Charleston Reservoir, as it's a good 6-7 miles south of the "community" and your turn-off back to the north/northwest. Had you continued to the Charleston Reservoir, you could have turned west on 746, which runs around 21 miles to pavement (NV 225 south of Wildhorse Reservoir). By jogging back north/northwest, you passed the Prunty Ranch and continued down the Bruneau River (not a fork--but the main branch). You lunched at Mink Ranch where your north/northwest road down the river crossed the river. You then continued up Meadow Creek Road on a southerly heading, leaving Tennessee Mountain on your left, to Sunflower Reservoir on your left, there turning west across Sunflower Flat to NV 225 a little south of Mountain City, NV. Mountain City is on the Owyhee River, which drains Wildhorse Reservoir, flowing northwest through MC to Owyhee and on into Idaho. You left the main branch of the Owyhee and headed west to the pipeline road, crossing the South Fork of the Owyhee. The South Fork crossing is close to Bull Camp, where self-styled "mountain man" Claude Dallas gunned down two Idaho wildlife law enforcement officers in 1981.
I'm looking forward to seeing how and where you crossed the Little Owyhee and reached US 95 at McDermit. Thanks for all the detail and the considerable effort to post it all. Epic journey, no doubt.
Foy