Big Mike,
I have a 29 Classic in four inch and a pair of 629's in three inch. All will take heavy loads no problem but it's not much fun for me on the other end.
I have shot the hot hunting handloads I use in my Super Blackhawk in one of the 629's but half a cylinder full was enough.
A lot of the early 29's did get shot loose here in the States by silhouette shooters some years back and I think S&W M29's got a bad name from it as well as the metal not being enhanced in those days.
I'd agree with my cousin, Richard Oldfield above and suggest a SBH or Redhawk for hefty loads. I have a Colt Anaconda that sucks up recoil almost as much as those Rugers.
BTW, this is my first post here. Richard and I are friends and suggested I stop by. I've lived in mid Michigan most my life but was born in Brantford, Ontario.
I'm also a big fan of older S&W revolvers. Mainly N frame .357, .41 and .44's. although I'm getting into K and L frames now.
Nice looking board you folks have, hope you don't mind another Yank slipping under the wire.
Best,
Brian45