Pinwheel:

I do not recall experiencing crumbling and extreme residue being left on the shaft (wood, glass, and aluminum). Was your club shooting into the surface of the board rather than the edges? Are you positive you are referring to cellulose fiber and not foam or styro board? I guess I'll have to see if the material and the density of the material is as good today as it once was.

As for hardness of the target, that is where the compression control comes into play. However, the impact cannot be as hard as when the shaft impacts with a hard-foam 3D deer. I never had problems withdrawing shafts from the cellulose fiberboard.

Regarding carbon; what can I say. Sounds like the carbon surface is not smooth and has drag.

Sure cannot see myself shooting a broadhead into a box or bag of rags.