Ditto here as well on the issue of guides and rifle/caliber knowledge.
I've met a handful of "guides" over the years in Idaho's backcountry. Without exception, everyone of them were loggers, ranchers, or the like moonlighting for a few extra dollars.
Doesn't mean they didn't know anything about calibers I suppose, but they certainly weren't JB.
If you're not burning through batteries in your headlamp,...you're doing it wrong.