What's the current best LGS/non-boutique SD ammo out of the PS90? Fiocchi? FN SS197? Hornady?
Thx!

My vote would be;

-SS197SR
-Speer Gold Dot
-SS198LF (if you can get it at your LGS)

SS198
Hornady has a new Critical Defense round coming that is supposed to be relatively spicy.

Elite may be "boutique", but Jay just announced a new hp load in development:
Attached File

SS197 and/or SS198.

Given the uncertainty with terminal effect, and low recoil, I could see an argument for alternating rounds in the mag of SS197/98.

That's like the fudds that alternate buck and slugs in their closet mossbergs...
It will be less noticeable in the PS90, but from a pistol the POI shift between the two loads is significant.

Very much like that. Except for a shotgun really buckshot master race.

For 5.7, we've seen gel tests, but really have no idea what load is actually more effective.

-A member of ARF whose a autopsy guy said he saw SS197 perform poorly in a real life corpse, where a number of rounds fragmented too much and only penetrated a few inches. Yet in gel tests, SS197 is one of the few rounds that consistently expands/frags yet makes it 12"+

-SS198 never ever makes it 12" in gel (always 8-9") yet it reaches rifle velocity from the PS90, and had one extremely effective single shot stop in Belgium by their police.

-->At least for me, I have no idea which is actually the better load. The farthest distance in my home is 12yd, and I suspect the effect of stress and movement will have much more effect on shot placement then the differences in POI between the 2 loads.

AAC’s Vmax 40gr is the same as SR197, but loaded faster, just fyi.