I have been trying to develop some 9mm Luger loads for my wife's Norinco Model 213 pistol using random range pick-up brass I purchased from a company. I have been using a hand reamer to clean out and shape the primer pockets after depriming, but I get such varying pressures when inserting new primers that I often have to recock the hammer and give the primer a second blow to get them to fire. Initially when I first started I didn't ream the primer pockets and had misfires of about one in 5 shells. After reaming I am up to about one in 20 misfires. And when I insert the primers and check them with my finger, sometimes I have to push them in deeper with more pressure on the press handle which seems excessive. I am using a Pacific C press for reloading including primer insertion on the downstroke using the push in primer arm through the slot in the case-holder piston.