Ingwe, have you ever compared H4198? I can never find it on the local shelves, but it's part of the Extreme series so it's got the potential to be a win-win.
I have not. Its fairly readily available here, but I started with IMR and it worked so well, I saw no need to experiment. Im even starting to use it in a few .223 loads...its giving me the same performance with almost five grains less that my usual IMR4895.
Five grains doesn't seem like much but on a good day on the killing fields thats $30 bucks saved on that one day. ( well, not really saved...it goes in the gas tank, or buys steak and beer..
)