I am glad that you are back to consistancy again. Do you remember how many grns of N120 you tried in the past with 300 grn bullets? I shoot N120 in my .50s and 45s and love it. I am shy of 2450 in the .50 cal and 2750 in the .45.
How many gns are you shooting for that speed? I am shooting 60 pushing a 300exp