Other than thinking maybe it has to do with the volume available in the chamber and the barrel and the burning characteristics of the 2 powders. I have been moving away from H110 to Lil'Gun were appropriate. I get very close velocity wise and the SDs are lower. Purely subjective but I feel like Lil'Gun runs cooler. May be just me and my guns and loads, but cooler equates to longer barrel life, not that I'm even remotely close to shooting a barrel out.
Make smoke,