oldsmellhound
One point... Western Powders has backed away from the non-corrosive statement. Chemical testing indicates the BH does has a small of Potassium Nitrate and Sulpher. So it's residue can work on your barrel also.
It is a lot safer than other subs and I believe it is less corrosive than T7 which is also as you say...
but T7 isn't all that corrosive either. I've left a rifle dirty after shooting T7 for up to 48 hours before cleaning, and have never had a speck of rust.
Shoot! I leave my bores uncleaned all hunting season after shooting at the beginning of the season. I call the bore semi-clean as I run a windex patch after shooting a dry patch and then a very lightly oiled Montana X-treme BC patch - reload and go huinting again...
I believe that i would be in the same life boat as you cast adrift by the BH shooters, even though I have a case of it here that I got on sale at Cabelas for $20 per jug... But I still shoot T7...