Got out today and finally got a chance to test out some loads for my Marlin 336. Shooting was done at 50yds off of a rest in 5 shot groups. These were without a doubt the best 2 groups of the day.
This load is a 200gr Remington Core-lokt bullet over 35.5gr of IMR 4320.
This one is a Sierra Pro Hunter 200gr RN over 34.0gr of H335
I like the results with the H335 but it throws a pretty good fireball out the end of the barrel, this does not happen with the IMR 4320. I may have to try the 4320 with the Sierra bullets and see how that goes. I certainly can't complain about these groups since they were fired with iron sights.
Stu