That's a start load according to AA, if you pushed it harder maybe?? Kinda shootin in the dark here without some chrono data.
http://www.accuratepowder.com/data/PerCaliber2Guide/Handgun/Standarddata/44Cal(10.97mm)/445%20Super%20Mag%20page%20136.pdfTrajectory for Hornady .430 dia. (44 cal) 180 gr HP/XTP at 2300 Feet per Second At an Elevation Angle of: 0 degrees
Ballistic Coefficients of: 0.138 0.138 0.138 0.138 0.138
Velocity Boundaries (Feet per Second) of: 1360 1360 1360 1360
Wind Direction is: 0.0 o'clock and a Wind Velocity of: 0.0 Miles per hour
Wind Components are (Miles per Hour): DownRange: 0.0 Cross Range: 0.0 Vertical: 0.0
Altitude: 0 Feet with a Standard Atmospheric Model.
Temperature: 59 F
Data Printed in English Units
Range Velocity Energy Momentum Drop Bullet Path Wind Drift Time of Flight
(Yards) (Ft/Sec) (Ft/Lbs) (Lb-Sec) (inches) (inches) (inches) (Seconds)
0 2300.0 2114.0 1.84 0.0 -1.5 0.0 0.000000000
25 2152.5 1851.5 1.72 -0.21 0.06 0.0 0.033707969
50 2010.5 1615.2 1.61 -0.9 1.15 0.0 0.069762139
75 1874.2 1403.7 1.50 -2.12 1.71 0.0 0.108401078
100 1744.2 1215.7 1.39 -3.96 1.64 0.0 0.149886461
125 1621.2 1050.3 1.30 -6.52 0.86 0.0 0.194494935
150 1506.0 906.3 1.20 -9.91 -0.75 0.0 0.242505650
175 1399.6 782.8 1.12 -14.25 -3.32 0.0 0.294181885
200 1303.4 678.8 1.04 -19.7 -7.0 0.0 0.349737116