What pressures do Pyrodex pellets operate at?

[Catfish]

With the old black powder rounds you just filled the case and left enough room to seat the bullet, you left on air space per say. The pellets are stposed to be equal to the stated wieght of black powder, but if you mash the pellet when you seat the bullet you increase the burn rate of the pellets. If you do not seat the bullet snug to black powder bad things can happen. I`m old school and learned to bounce the ram rod to tell when the ball is seated, you can do that with pellets and get any kind of accuracy, that`s why I went back to powder.