It's funny you should ask, I just came back from the range. I bought my 329PD off of Gunbroker in November and this was the first time I had a chance to give it some range time.
I have two other 44 Mags, a Ruger SBH 4 5/8 in barrel and a Colt Anaconda 6in. The Colt is the most accurate 44 I ever shot. That being said the 329 PD shot pretty well today. I had three different boxes of factory stuff to try. I also took my Chrony to test the FPS to see where I was at.
I had a box of 44 Special 240 grain cowboy loads, these were real pussycats to shoot. They were only pushing 650 FPS. Pretty accurate at 15 yards rapid fire though, but not what I was looking for.
I also had a box of 240 grain American Eagle, at 25 yards shot like 5 & 6 in groups from the bench, and they were a hand full. Shooting around 1450 FPS.
Next up was Remington UMC 180 grain JSP's, not bad accuracy, but would not want to shoot 50 rounds with these. They were real accurate at 25 yards with my Colt Anaconda and were booking 1585 FPS. In a pinch I would use them with either revolver.
Then I brought out my handloads. I loaded 10 grains of Unique, with a Cast Performance 255 grain WFNPB Hard Cast Bullet. It clocked just over 1000 FPS and shot 2 in. groups at 25 yards from the bench. I then went back to 15 yards and shot about 2in groups off hand. The recoil is not bad either. So I guess I found my load for this 329PD. I fired about 30 rounds and it felt pretty good. I did replace the grips with Pachmyrs. You gotta cover that backstrap.
Regards PAH