Your load seems awful slow, im running the 34 v- nitemares at 3850fps in a 24" barrel
Are we chasing velocity or accuracy? or Velocity over accuracy... velocity first, accuracy second?
personally I am an accuracy first person...
my 20 practical sees 32 vmaxes and 24 gr NTXs.... with H322 and Benchmark as their chief powders, followed by IMR 4198.