My only experience with Baikul is the 12 bore SXS that has the option of having a 45-70 in one bore. Whoa Nellie!
I too was impressed with fit and finish, the gun shot very well, and with the 45-70 -very very accurate! Yes I cheated and used a PAST recoil pad
I don't recall the price, but surprised me being so affordable with this option. Gunsmith did a trigger job, to smooth a bit. It fills a very special niche.
So I think you "done good", go out and get her broke in.