That is a great find so please take loving care of it . Let me offer up some thoughts for you . It would be wise not to feed it a steady diet of full magnum reloads or store bought stuff . The earlier 29's don't have the endurance package so you could possibly in time find it coming " loose " .
Everyone talks about Elmer Keiths load . It was a load designed for his bullet only . His design has a short shank ( part in the case) and a long nose . It increased the case capacity . Store bought 240grainers are the reverse so you need to drop back on the powder charge well , well below the 22 grs of 2400 powder that Elmer Keith used . Use modern data, please .
After having read several of his books he didn't fire a whole lot of his full magnum loads either . If going on a hunting trip or getting ready for an exhibition he would start out with a couple of cylinders full of his " gallery load " 5.0 grs of Bullseye powder . Then go to his " carried everyday load " of 8.5grs of Unique for a few cylinders full . Last he would shoot maybe only 6 rounds of his regular magnum load , and sometimes it was only 2-3 rounds if he was on target . All shooting was at about 20-25 yds with the " Keith Bullet ". These particular loads had the same point of aim and impact . He had worked up these loads to match POA=POI.
I have had numerous 29's , some earlier and all now are the later models . They all served me well but I understood their limitations when reloading for that individual model and dash # . Especially limit the amount of Buffalo Bore stuff . They make fine stuff but it is definitely on the " very warm side " , hard on 29's for extended use , IMO .
The model 29's are very beautiful pieces of art but must be respected for their limitations if they are to last a lifetime .
A very well known youtuber has over 75,000 rounds through his 29-2 , 8 3/8th " barrel . I saw a video of him talking about his " magnum " hand loads . They were chronographing at less than 1000 fps using a std 240 gr cast bullet . That is a good , serviceable , carry everyday load to use , for 99% of what one needs . I am a S&W guy through and through ( so is my sister ) and I love my big N frames but I also respect them and take care of them . Best of luck and have fun