Hi!
Yes. Its a 1975 vintage 336. I worked up a bunch of loads last weekend for 180gr, 200, and 220. I managed to find a 1.5" (at 100 yds.) or better load for each weight without difficulty.
The very best load was with 42 gr. of BL-C2 under a 180 gr. which would shoot right at 1", but it's a lot slower than the H335/180gr. load that was almost as accurate. The 200 gr. slugs seemed to like Win 748 best (another 1" or so load) and the 220s liked BL-C2 also. Now that I've found a can of IMR4895 I should be able to get another 50-100 fps out of the 220s, though.
In almost every case the higher the velocity, the tighter the groups. Makes it very tempting to just keep on pushing, but I don't want to hurt the gun... or me.
Ironically, when I was just trying to get the scope lined up with some factory ammo, the silly gun would shoot Remington 150 gr.s into one ragged hole!
Another fabulously accurate Marlin. My .444 is the same way, except it won't shoot the factory crap worth a hoot.
-Sam
Oh, and by the way, from looking over the load charts, I'd leave 4064 for other rounds. There's lots better choices for the .35. I got decent results with RL7, IMR 3031, BL-C2, W748, and H335. But it has to be a fast load or the groups would open up to 3"+.