Bear Creek Arsenal now posting pictures of groups at 100 yards on their website

[Rookie6.5gman]

Put together 6.5 Grendel with 24" BARREL. I was expecting it to be a tack driver but a shotgun will shoot a closer pattern. No accuracy whatsoever with three types of ammo. Bought the upper complete from Pro2a Tactical. It has a BCA barrel on it. Where should I start? Be gentle