Nice to read that in my first response because I have one already.
However, it opens up another can of worms.
My reference to velocity readings was about comparative jumps in speed. For example if I load at 0.2gr increments and my readings are 1200fps, 1220fps, 1240fps, then suddenly 1310fps, then that sudden burst of speed could mean a pressure spike and I need to back off a bit, returning to 1240fps as my max.
If I understand your description of using velocity, it implies that I need to text book standard velocity for a particular bullet and particular poweder combintation. I don't have that. Nowhere have I seen exact data for N350 or N110 with H&N 200gr plated bullets, N110 with FMJFN 240gr PRVI Partizan bullets, or now N110 and 275gr Cast Performance LFN bullets.
All from a 4" barrel.
Without that data to begin with, I don't have that max fps reading with which to compare my own load velocities: would I not still be "flying blind"?