Just wanted to get some opinions on steel case ammo for my AR. I've never used it in my AR but with prices going up and ammo getting hard to find i thought about trying it. I've heard it can damage extractors,firing pins,etc. I've always been told by 2 different gunsmiths to stay away from it but I see Hornady has there own steel case ammo and didn't think they would sell ammo that would damage guns. Any thoughts?