I have a 329PD. Lots of problems, locked up twice. Sent it in to Smith 2 times, it is supposed to be fixed, do not believe it. Shot a couple of cylinders of 240 keith bullets with 10 grains of Unique. Had to pound out the empties with a hammer. These bullets are .430, did some checking and the throats mike .429 or more or less. I am curious if anyone else has had this problem and what the solution is.