Re: how do I decide?
The inertia driven loads can be tuned to cycle any load as well. Just order an extra recoil spring and trim it for the light loads. then swap if for shooting heavy loads.
It takes 43 muscles to frown, 17 to smile, and 3 for proper trigger squeeze.
The latest caliber or gear is no substitute for experience and skill. Rifles and cartridges don't make hits -- shooters do.
Fact of life:
After Monday and Tuesday, even the calendar says WTF!