I crunched out the center tube. This charcoal was almost as tough as uncharred paper. Had to grind it with a grain mill to get it broken down enough to fit in my ball mill. Anyway, 16 hours milling wasn't enough though it looked and felt like enough. Usually I run it 12 hours and get great results with black willow. This TP powder was very dirty and low on power, like it wasn't milled enough. I got 1516 fps average from my .45 SMR at 50 grains by weight/52 volume, 3F. I get 1646 from black willow and 1670 from GOEX 3F. Only upside was the fouling didn't produce a hard ring that made ball seating difficult, though the "chamber" area was very dirty, far dirtier than with just about anything else I've used. Consistency was good, SD of 6 fps for five shots. Even if it matched black willow I wouldn't use it, and am not really inclined to try it again with a different brand on account of how hard it was to break down.
Next I may try brown Kraft paper from work, I drown in that stuff because all our suppliers use miles of it to pack their shipments.