There was a fairly informative article "way back" in 1990 in Guns & Ammo that pretty much stated what many here have already mentioned about the 29.

A couple of silhouette shooters were featured and told Smith of some of the issues they experienced and actually got Smith to listen to them.

The main feature of the article was the then new 29/629 with the endurance upgrades. The accuracy of seven 629 DX revolvers tested was impressive.

My own 629-5 has NEVER fired a 44 Special. Most have been 240XTPs with H110 or 296. I can sure fire more than 20 or 30 rounds without discomfort. It is mainly the cost of 44 ammo that keeps me from shooting too many rounds - and I do reload.

The accuracy of this 629 is incredible for a mass produced revolver. I don't need to shoot loads that put down an elephant. If I really need a lot more than the 44 can deliver I'll break out the .30-06.