Bullet looks pretty good. Kinda hard to tell exactly from the pics. Wash is off and weigh it, for kicks.

I think that sometimes it just happens. You might get 20 passthroughs, then have one that by all rights should have...but didn't. I've had it happen, both with ML and CF rifles. Not an issue with the bullet or load, it just happened. My .02 anyhow, fwiw. Now if you were finding every bullet not passing thru, or the majority...that would be an issue.