=================================

You are absolutely wrong for improperly reading my post.
When I put notice in my posts to increase powder by this much with less powder grains & increase powder by that much with more powder grains, well.... does that not signal an increased pressure warning???

I was not wrong when I stated changing from ff to fff with777 powders yields less pressure changes than doing the same with real blackpowder or Pyrodex. There's very little difference between FF and FFF 777. The components inside those 777 granules will not allow itto fire consistently/instantaneusly in sidelocks had theyproduced it much coarser in ff. The result would of been inconsistent pressure & the creation of granule chunks. You can't find this powder in F and FFFF, but some others you can.

It's the same reasoning with Black Mag. We no longer see Black Mag 2 because it was toocoarse & inconsistent with pressures. BM3 is much-more stabilized -- much-more pressure balanced.

I'm done here. Got more problems with my post? It doesn't surprise me. Go ask whom yourefer to as yourML King for a more explanable answer on this. Also... go read Hodgdon's siteabout 777 & it's pressure-related wordings for an even-better source on how closely both powder types actually are for ML service.