I am wondering what would be the closest powder to substitute for AA #9 in 357 mag loads using 180gr cast boolits. Keep in mind that I'm not looking for top speed, just moving along at around that 1,000fps range.
I tried some with Unique, and while it shot well, was much happier with the AA #9 load as far as recoil, noise, and cleanliness. The Unique was way snappier and louder, while the AA #9 was more of a push, nicer to shoot 100+ times in a row.
I do have True Blue, IMR4227, 2400, and red dot on hand. But if there is another good substitute for the #9, I will not be opposed to buying some to try.
I have been thinking about H110, but from what I have read it needs to be pushed to the upper end, and that is not where I want to be with these loads.