I still have a letter Nick Harvey sent me in the early 80's when I "asked Uncle Nick" as barely a teenager. He would have been in his 30's or 40's back then, and I'm in well into my 50's now.
I'm a bit conflicted about the 350 Legend. It's not as fast as the 35 Remington - which is better than the 30/30 but is still basically a 100 yard cartridge. According to Nathan Foster's research you have to be over 2100 fps for fast killing in a 35 calibre and the legend isn't getting that with any bullet heavier than about 150 grains.
Nathan Foster's wife Stephanie did a video on the 350 legend and it didn't think very highly of it on goats
https://youtu.be/Um5otKaH2QI.
I'm hoping that Ruger will bring out the Marlin 336 in 35 Remington.