I've shot a regular 629 with a 4" barrel with both 44 Special cowboy loads and full house 240 gr factory loads. Didn't have problems with either, but would anticipate that with either a 329PD or a Mountain Gun I would handload a 250 cast bullet to something less than full speed (with a 329PD being loaded even lighter, something along the lines of the loads that Brian Pearce had in Handloader 251, Feb-Mar 2009). I both handload and cast, so the loads I use are not limited to factory loads but could be tailored to the use and to the gun.
