29, 629
I have owned S&W 29's in 4, 6.5 and 8 3/8 bbls, and 629's in 3, 4, and 6" bbls- none ever broke, even with heavy loads.
Switched to Ruger Sbh and Redhawks, no problems there either..keeping Sbh 5.5 and 4" RH-
RH 7.5 and S&W Mountain Gun heading to Gunbroker!
For my needs the 7.5...