Originally Posted by
ronlaughlin
It is conceivable to me, that you may have made your plug less compatible with BH than it was when it was new, by putting the flash hole out on the end. It doesn't really matter, because you use 777, not BH209.
Not even works very well with BH - already worked that over. There is no need for a powder port to shoot Bh. The only reason BH originally suggested was to get the powder closer to the nose of the 209.
One day you will find that one out also as you keep making changes to your methods of construction. You are getting closer all the time to the changes that most already know work and work well.
But that matters not, It is all in the mathematics of ignition and undesrtanding the dynamics.