I had the Baikal Izh-94 in 12/30-06 which was setup perfectly. The shotgun was putting slugs in 3 inch groupings at 75 yards and the rifle was 1.5 high at 100 yards. The the vertical axis (windage) was in line for both barrels and I never needed to adjust the elevation on the rifle barrel for 165g bullets.
The Spartan (Remingtion rebrand for Baikal) SPR 94 12/.223 was setup terribly. The shotgun was putting slugs 5 inches to the right and 3 inches high in reference to the .223 round at 50 yards. EAA could never regulate this gun. Remington Kindly refunded my money.
The issue I have with the Baikals is that the windage can not be adjusted and the elevation can only be adjusted using shims.
The plus is they are solid guns and there are rifled chokes and turkey chokes available which really increase the versatility of the gun.
I really liked the Baikal and was completely turned off by the Spartan.
Bottom line fire the Baikal/Spartan before you buy it. Or go with a combo that easily allows you to adjust the windage and elevation like the Valmet 412.
Let us know what you decide.
thanks
Doug