(I was offering 'start' data 8) )
I "upgraded" some years back from the inverted HBWC for wife's S&W M38 Airweight Bodyguard with a kinda-mild 140g XTP-HP over HS6. Man, did THAT take an enormous amount of development time, finding the proper balance of:
mild recoil, reliable function, accuracy, low flash and noise signature, point of aim matching point of impact, mild recoil, and mild recoil, and mild recoil.
They're in the gun now.