Rabbit hole just got infinitely deeper....
One thing I need explaining pertains to my load development of my 22 Hornets. H110 and LilGun have almost equal burn rates (ranked 60 and 61 in my chart) Always thought pressure and velocity go hand in hand, however LilGun produces much lower pressures than H110 at similar velocities. not just a trivial amount either. What am I missing?
First question I would ask is "how are you quantifying pressure?"
Assuming peak pressures are the same, some powders are apparently showing a slower tail off in pressure basically increasing the "push" down the length of the barrel (versus just kicking it in the ass out the case). In other terms some powders increase the "Area Under the Curve" or AUC in the Time/pressure curve. That's kinda been the holy grail for powder manufacturers with people experimenting with duplex powder loads (layered charges of different burn rate powders) and other strategies. Some manufacturers have apparently cracked the code on that (or so says "Johnny's Reloading Bench YouTube Channel").
