At that COAL, I think you're fine at 4.4gr. Mind you, I use a different powder, but with a similar load range (Hogdon Titegroup), and in a nice big .45 shell I doubt you are risking excessive pressure. I run a bit longer, around 1.268", but that's to feed in a 1911 as opposed to mitigating pressure.
You do want to chrono your first few test rounds, if possible, because that'll give you your feedback compared to the chart velocities for that load.
(I use a digital scale, but it looks like that balance is at 4.4 to me. )