Digital BW, The Print

I have shot tons and tons of XP2 Super. It is incredibly tight fine 
grain, unless it's been radically under or over exposed. I've seen 
people try to rate it at 1600 and it starts to fall apart at that
point. 
But I doubt you could mis-expose 300 rolls of film, so that's not it.

I only shoot those films: XP2, T400CN and now PortraBW. Left 
XP2 because they won't make it in 220. 

Please post back your answer to this. I'm trying to let my 
backside relax now, after reading your post, and trying to imagine 
how to save 300 rolls of film... I won't sleep well tonight. 

Mark Tucker
http://marktucker.com