So do you think I should send it in, or try it again. Sounds like you were telling me it may be the magazine loading issues, but then your post title says 'Send it in'.

Sorry about your OOB. I'm trying to avoid the same thing, which is why I'm kind of nervous about shooting it again. If I'm comfortable it's a mag loading issue, I could try it again. Did your rifle get damaged when this occured? Just wondering if that's why you sent it back, or if there was a feeding issue they had to correct for you.

I could polish the feed ramp a bit too. I was careful loading the last two mags and those 50 went without a hitch. Maybe it was just me?