Just for the record for those who are wondering, the endurance package upgrades started in 1988 with the 29-3E & 629-2E, and ended in 1990 with the 29-5 & 629-3. I own both types of 29's, and will say that the endurance guns are much better suited to steady shooting with full house loads, regardless of bullet weight.
Also, it doesn't hurt to shoot 300 grain bullets in any of them. You just need to keep in mind that they aren't Ruger Redhawks and can't be loaded with some of the charges that are a walk in the park for Big Red. If you follow currently listed loads for the 300 grainers that are listed as being suitable for
all .44 magnums, you won't have any trouble.
There is an excellent article in
Handloader # 241 June/July 2006 by Brian Pearce (available from wolfe publishing through their backorder issues) that is strictly on handloading the different variations of 29/629's, and it lists lots of loads of different power levels using all sorts of bullet weights. He tells you which loads are safe in which dash guns etc.
Basically, all 29's are the same strength. It's their durability that comes into play, and endurance guns have it all over the older non-endurance equipped guns, period, and unless you're a "Smith snob" that just can't bring yourself to admit it, there's no denying it. I prefer the older P&R guns like most people for general use and beauty, but if I need to do a lot of shooting with full power loads and a Smith and Wesson, I use my endurance equipped guns.
There is also an article in the September 1989 issue of
Shooting Times by Dick Metcalf, that covers all the details of the endurance package, how they uncovered exactly what was happening, and how the re-enginerred the gun to fix the problems. You should try to contact them to see if a bcak issue is avalilable for that issue.
It beats the heck out of simply trusting internet forum opinions (including this one), to have some actual facts to read at your disposal.
