If all those model 29s are so weak, what explains all those .45 ACP S&Ws over the years that were subjected to some genuinely hot loads?
The old 1917s weren't even heat treated, yet look at some of the loads that, (admittedly some), survived.
The tradition continues with the various 625 models. People put some amazing loads through them, even to include rechambering them to .460 Rowland. It is not a practice that I approve of, but lots of people get away with it, for at least a little while.
My personal 29-2 has had quite a few Keith type loads through it, and it is still tight. I usually use .44 SPLs any more, because I am not as tough as I once was, but the 29 is still tough.
Not suggesting that you overload it, just that the conventional loads will work quite well.
For serious use, I would still prefer my 625. I just don't use as much powder as I did back in the day.