I have a Marlin 35 Remington, probably abut 45 years older than the OPs. K, you have seen it, probably shot it. The 35 Remington was designed to go 2000 fps with 200 grain bullets. A good thumper.
I got half a box of old CIL Dominion ammunition, box marked $5.40, so about early 1960, with 200 grain bullets with my Marlin. I shot some over a chronograph and they made 2,050 fps.
The Hodgdon site shows many loads that go 2000 or better, but the problem is when speed is measured with a chronograph they come up from 150 to as high as 200 fps short of what it says they are going.
I started using LVR powder before Hodgdon listed it for the 35 Remington and 200 grain bullets. I loaded up a batch with 41.4 grains of LVR and they clocked 1925 fps.
Hey, pretty good!
I then loaded a batch at 42.2 which shot very well, but I did not test for speed.
Now, here is the kicker.
Hodgdon on line now list 35 Remington, 200 grain bullets, LVR powder, starting load 42 grains and max load 45 grains for 2235 fps!
That is excellent.
I would now use only LVR powder, and OP, I would start at their starting load of 42 something and maybe go up toward their maximum.
That is far and away superior to any other powder for the 35.