I finally found some LeverEvolution powder, and with 35.5 gr and the 160 gr Flex tip bullet, my Marlin 336 is now sub-MOA at 100 yds. According to the Hornady load data, that is a max load, so approach with caution. I got nearly the same accuracy with 34.5 gr and will decide on a final load once I chronograph both. If the lower load isn't much slower, I will use it just due to the lower pressure. With most of my shots here in Missouri being under 100 yds, I don't need that much energy, but knowing that the Marlin will do the job at 200 - 250 yds on the rare long shot could easily make it my go- to gun!
When I shot the factory LeverEvolution ammo, my Marlin was more of a 2-MOA gun, but really seems to like the reloads, using the same powder and bullets, better. Good for me since I can now load up a bunch of ammo and save some money!