55 TO 62 Grain bullet in AR-15

[Montana Cowboy]

Howdy Folks
Bought a AR-15 in .223 caliber. Reading the thread below I didn't want to post a question there as it had more to do with bolt action rifles and didn't want to hijack that thread.
What powder have you folks found to work well in the AR-15 (it has a 16 inch barrel) type rifle.
Have not reloaded for this cartridge before and I'm looking at Varget or Reloader 15. I did have my eye on H335 but after reading what Rocky had to say about fouling with H335 I dumped that one.
This rifle was bought as a fun gun to shoot. Looking to work up a load that is accurate (two inches or less at 100yds with open sights) with decent velocity. Thanks MC