New Grendel upper won't chamber a round properly

[jertex]

Another update, my Lyman Ammo Checker block came in and all of the cartridges that I loaded seat perfectly, so there definitely was an issue with the chamber.

[VASCAR2]

Thanks for the update.

[jertex]

Well, it's been a while, but I'm supposed to receive a replacement upper today. They didn't tell me what was wrong with the first one, but they replaced it. Once I get a scope on it & sighted in, I'll post a report.

[Mesa1978]

Another update, my Lyman Ammo Checker block came in and all of the cartridges that I loaded seat perfectly, so there definitely was an issue with the chamber.

Too funny, there are some on this site that disdain ammo checkers.

[Happy2Shoot]

Bump for update.

@jertex