Quoted:
Try a bowl at the current moisture level and see how it is. Most pipe tobacco could use some drying IMHO.
To a certain extent, yes. However, if it's bone-dry it's a loss. All tobacco contains oils. Once the moisture is completely gone, the oils are pretty much toast and won't come back. Most all pipe tobacco, especially aromatics (which IMO are
anyway) is too moist. Whenever smoking tinned tobacco (especially flakes) I usually let a bowlful sit out a couple hours before smoking.
As a general rule, I try to keep produce out of my tobacco and vice versa.
OP if you buy your tobacco in bulk, go to the grocery store and buy a case or two of Ball or Mason canning jars. Wash them in the dishwasher first to make sure there are no mold spores etc. Once dry, fill with excess tobacco and let it go. It will continue to age well and it will maintain it's humidity. I have about 50 jars of 8 year old Penzance, FVF, Best Brown, Stonehaven, etc. They've been aging wonderfully and most have wonderful crystals formed on them