I'll say the steel loads defeat up the bolt manual pin, so I think mine is a bit about gassed for significant loads but operates every thing else excellent. I even shoot light three/4oz hundreds from it. I’m probably planning to buy an a300 ultima 12ga another time I see https://a400vsa30099742.tblogz.com/a-secret-weapon-for-beretta-a300-ultima-vs-a400-41106891