First of all, apologies if this has been asked before, but 30 minutes of googling and forum searching didn't turn up any satisfying answers.
I'm new to centerfire rifle ownership in general, and AR ownership in particular. My first time out shooting my AR, I failed to fully seat the magazine and the first two rounds I tried loading didn't chamber fully and came out dented near the neck. The dents are only moderately deep, but both have a "seam" at the bottom that's sharp enough to catch a fingernail on. Both rounds still chamber without any hangups, but I wonder if this kind of damage is likely to bump the chamber pressure up dangerously high. Any word on whether these rounds are still safe to fire?
The rifle is chambered for 5.56 and both rounds are Winchester branded M855. Thanks for any advice.
First round:
https://i.imgur.com/PBt03sM.jpg
Second round:
https://i.imgur.com/glO44SH.jpg