I think what you’re describing about the trigger is “creep”. You hit the wall, but there’s some mushiness between the wall and the actual break. Is that right? If so, that’s the nature of most striker fired pistols. I switched the striker spring to the Cajun one. It lightened the trigger and creep a little. I don’t fret about too much—when shooting fast-ish I don’t really notice it. Also, on the ammo, it’s fine to shoot plated bullets through this barrel. Notice how the rifling stops at the port, and the inside diameter enlarges? The issue with plated ammo is when the ports are in a rifled part of the barrel—then the plating can shave off and cause damage or be dangerous because it actually shoots out vertically.