Yep. I was surprised when my new 16 ga. RBL was delivered a few years ago with about 1/8" separation between the muzzles. I checked with CSMC, they confirmed this is per the design. Approximately 27/32" between bore centers at the muzzle and 35/32" at the breech. Several patterns shot at 30 yds. hit where they should, so I don't think about it any more.

Jay