When I purchased my .177 RW in LP and my .177 RW in H.P., I had AOA set tune parameters as follows:
RW L.P.
low tune for 8.3’s <12 fpe WFTF legal
medium for 10.3’s
@888 fps HFT legal
high for 13.4’s @815 FPS HFT legal
RW H.P.
low for 10.3 at 890 Hft legal
medium for 13.4 at 815 FPS Hft legal
high for 16.1 at 920 fps - pesting
since my main focus is field target im looking for consistent sub 1.5” groups at 55 yards, obviously smaller the group the better, but thats my standard.
My experience with Diablo shape pellets is they do best below 910 FPS With very few exceptions. Remember unless you’re in an enclosure wind and even thermal drift is a thing From moment to moment.