Ok. So, I’ve noticed with high power rounds my G21 spits out the mags every three or so rounds. Let me get this out of the way first: no, my grip isn’t engaging mag release. I’ve bought new mags, new mag release springs, extra power Wolff mag springs, new slide locks, releases, tried different power recoil springs. I’m getting the idea that the gun just wasn’t designed to shoot more powerful rounds and that this is a feature, not a bug. There’s no unusual wear inside the grip. I don’t get it. They’re being forced out somehow. Could be the slide doing it but how? I’m stumped. Shouldn’t have sold that HK USP.