Andrew,have you tried AP70N powder? The ADS30N not listed until you get to 115 grain boolit. I see where this powder comparable to some Hodgen powders and loads.ADI now Thales Powder.
On the Spartan boolit, is it polymer coated or copper wash? What diameter are they.355 or .356?
You should be good at the 1050 fps mark if it functions gun.Might do even better little faster.
In our matches if the trigger wont lift 3.5 lbs they DQ it. A machinist made up my front sight to fit the factory dovetail in the slide.My adjustment screws are definitely metric. Might be a copy.