Wayne,
The stated pressure is around 16,000-16,500 with a MV of around 760-780 FPS...it is .2grn higher than what is stated, however I do not believe it to be too high....however, as the amount of powder has increased it has become less attractive...just mess'n around...thought it would out, however it appears that it just my not...it's also a .357, coated, and not the typical .358 lead bullet, and the barrel has been moly coated
It just my be that there is not enough pressure being created to cycle the action
Thanks for the advise

:-)Rocky