Basic reloading principle #1: Start low and work up.
That practice is recommended for more reasons than just a safety precaution for increasing pressure levels. It also lets you find an accuracy load.
Randomly selecting a single powder charge, and expecting it to shoot well, will leave you disappointed almost every time.
In .44 Mag, especially, I have almost never found a near-maximum load of Unique to be the most accurate. Unique is a bit "out of its element" in .44 Mag.
As other posters have suggested, trying a powder better-suited to .44 Mag use would really help, as well. H110/W296, Alliant 2400, H4227, IMR4227, and Ramshot Enforcer would be far better choices. And you'd probably see an instant improvement in accuracy with all loads, in my experience.
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Don't even try it. It's even worse than the internet would lead you to believe.
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