inertia Posted January 2, 2020 Share Posted January 2, 2020 On 12/28/2019 at 8:42 AM, LowSpeedHighDrag said: I'm assuming that's a Steel Challenge load, because it's way under the required power factor for USPSA. I use between 4.3 to 4.5 grains myself. Agreed I need at least 4.0 320 to make pf with a 115HAP, 4.1 to be safe in my 6" Also to chime in I have tested more than 20 PCC (MPX) loads and the 125HAP over 3.7 N320 is the most accurate that makes PF and runs my MPXs really well Link to comment
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