My experience is limited to my "new" Brno 602, recently acquired from another forum member. I had a Limbsaver recoil pad installed and the trigger cleaned up and had it out to the range for the first time yesterday. The rifle is scoped with a Leupold Vari-X III 1.5-5 in Talley QD's.
My response to firing the .375 H&H for the first time was "Wow, that wasn't bad at all!"

Accuracy was just over MOA (about 1 1/4" at 100 yards and around 3" at 200 yards).
Bottom line: I would recommend a Brno 602 to anybody looking for a .375.