I too am a student of the S&W Model 29 and have been since the late '60s my first thought is Elmer Keith loads starting with a load of 18.5 gr of 2400 under a 250gr "Keith" bullet, max is 22.5grs for around 1400 fps that's a little hot for the N frame. I might look up some of John Taffens loads out of Bosie ID he has some great articles and loads on the .44 Mag from revolvers in Guns Magazine, I've met John a few times on the range nice guy seems to really know his stuff. In any case, I'd go with the Keith 250gr SWC or perhaps the Keith 255gr SWC you might look at Montana Bullet Works...
https://www.montanabulletworks.com/product-category/pistol/
I've hunted a lot of Deer with the .44 Mag love it. My go-to is the M29 & my Winchester M94 (1970's)... for a stand I like (center) the Ruger 77/44 with a Leupold M8 6X, the top one is a 77/357 and the bottom a 77/22
I use 240gr SP jacketed bullets for the rifles.
I had a good friend who was always asking me to come down to Texas for hogs, never did, he has since passed, a good man... I should have done it.
Good luck, Cheers!
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