Re: S&W 329 PD
I can tell you that it's hands down the worst recoiling/painful handgun I have ever shot with heavy magnum 44 loads,including the S&W 500 mag. it's significantly worse than the 500 with heavy mags. Someone did a article on big handguns and recoil awhile ago using a formula to calculate total recoil and the 329PD ended up beating out the 460 and 500 S&W mags for more recoil.
In fact it's so violent that with cheap 44 mag loads such as remanufactured loads or the blazer aluminum casing loads it would unseat the bullets as you shot it. By the time you got to round 4-5 the last couple rounds in the cylinder had bullets that were visibly unseated from the case neck, in some cases by 1/4". Higher quality 44 mag loads had no issues but it meant not being able to shoot remanufactured or cheap ammo as well.
The real issue is the lack of weight makes the recoil very sharp and painful. I've seen guys shooting one in less than 10 rounds literally tear skin off their thumb and palm of their hand where the backstrap sits. You can also put the S&W 500 houge grip on it, it has rubber over the backstrap where the stock 329PD rubber grip does not.
Shoot it with a good glove with mag loads, it's not bad with 44 specials about like a steel frame 6" 44 mag with mag loads.
It's not a fun gun to shoot, it serves a very specific purpose. There is a reason you see a lot of used ones in really good condition floating around.