I agree with jepp2, clean your barrel, scour that thing till it's mirror bright and operating room clean. Then go back to your 4.4 grains and I bet you will be fine.
Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.