[Benelli M3 semi-mode failure to cycle]

so i just got my benelli m3 recently and ive bought a bunch of different ammo 12ga to shoot and every single load i put fails to cycle the next round.

 

Pump mode works perfect and has 0 issues but even 2-3/4" & 3" buck/slug dont reliably cycle. it always gets stuck in the feed or i get a failure to eject because the load wasnt powerful enough(???). 

 

no idea what ammo im supposed to use with it or maybe something is wrong with the gun? i installed a reduced power spring kit and even with that i still get failures in semiauto.

ive shot federal, estate, fiocchi, some other brands i have no idea.

 

any suggestions? or is my gun a lemon?

[WTB Benelli M3 Collapsible Stock]

Does anyone have one for sale? 

[Just bought my first shotgun M3, what upgrades can i do to it?]

also I cant seem to find a stock that's adjustable like a AR stock adapter.