I went shooting Sunday and here are the following results.
Sierra FN 150 grain bullet:
H335 max load of 33.0 grains gave a decent group at 50 yards, (2 inch), with less recoil and report than other powders.
Varget midrange load of 33.0 grains gave a similar result as H335 with bit more recoil.
Hornady 160 grain FTX bullets:
Loaded 32.5, 33.5, 34.5, 35.5, and 37.0 grains of leverevolution powder.
34.5 was good with a 1.5 inch group, the rest were as good as H335 or Varget with more recoil and louder report.
The 37.0 grain load is listed in my Hornady book as max, and all I can say is WOW. It does have more recoil than other loads, but 3 shots were almost touching at 50 yards with Williams peep sight. I would say 1/2" center to center max. This is definately my go to load.
I wasn't able to test at 100 or 200 yards as they were full up. I got there early 8am opening time, and tested 7 different load, and the long range filled quickly. I took some pics with my cell phone but can't find the cable to download them to the computer. I will post them if you want when I can find the cable. Hope this helps, my rifle is a Winchester 94 1971 year .30-30 with 20 inch barrel I think. Again, I am going to order more FTX bullets in the future and stick with Leverevolution powder, which is a ball powder that meters well. It is the shiznit. Good luck, YMMV.