Mine shot way too high with all ammo, and the rear sight lowered all the way down. Sounds like they may have fixed that problem, if your's doesn't perform the same. Accuracy was excellent though, and with a rear sight change, it was fine.
I thought it needed a bit more weight, so I pulled the buttplate, and filled the hole with #8 birdshot. Then replaced the plate. It added about a pound to the gun, and really felt better balanced too.
Enjoy your new BC's fellas!